Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a5e24b2e813dc7…

MALICIOUS

PDF

183.9 KB Created: 2021-07-21 13:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: ce4408306e16e0a46e98e2dc48e62ea0 SHA-1: deba6924b422cf103f5c2d9dc0879ed696fd131a SHA-256: 76a5e24b2e813dc79a1dca0469c63371e336fa203e5f4017850586f37801a98c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous URLs that point to PDF files hosted on various websites, many of which appear to be compromised WordPress installations. The presence of these links suggests an attempt to direct users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9721

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://abpaluso.com/upload/file/56999346357.pdf In PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/0305c672d090f2c19c2d105189c0f035/fumenijuxobisafilal.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608540a8767da---8772838593.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/5cjrku23kfma26qj5qu45piipn/vigawojizodunaz.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/140f552969844d56d0db42f7a1a52d30/39309851840.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/28611379821.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77534837c6---kazavumufabivovunowiri.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/25861b365c8089110fea1fae585828e4/fatonu.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/ddjmge57je0d56g9r8f9fn0sk2/24294809397.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072330956107---85647511760.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/696b8bdedfb74730e0dee6ecb5b1b87a/29314922040.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72120995880.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/hrse33i05q75eu4kbj38rpa0db/jixavunosesedixakuminob.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d885d73547---98807258376.pdfIn PDF document text
    • http://yuhenganquan.com/userfiles/file/20210526192322_1931141800.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210615204703.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607789c9eec67---jabonasinudidoselupofivi.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/21344469840.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/fbcf52cf6b5a5b1afaa33b1e40938b2d/14347614868.pdfIn PDF document text
    • https://samsungdvmklima.com/upload/ckfinder/files/jepudasalaxigujifuw.pdfIn PDF document text
    • http://leakefamilyreunion.com/clients/63964/File/61224355418.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160db3b9306438---sevugabodibobasaludigevel.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160adbf6dc70ac---nariwo.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/pedazame.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/dolupejumo.pdfIn PDF document text
    • http://wadsoda.com/UserFiles/File/kexenawidareratowafitus.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/93927543034.pdfIn PDF document text
    • http://easternsheep.by/app/upload/file/rilujarizi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=battlestations+midway+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26EEC 10664 bytes
SHA-256: 10fbd0b607e54e70c719d9db62c1eead21d7030c765a2fa99f423eb38b34f474
font_01_sfnt_off0002876f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2876F 19276 bytes
SHA-256: bb40b77d27104a4893a711251930c0bcb40c5db6ebac3124791ffc38e12e736b
font_02_sfnt_off0002b9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.