Malicious PDF — malware analysis report

Static analysis result for SHA-256 26186d94f162abf5…

MALICIOUS

PDF

79.8 KB Created: 2021-07-01 12:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 4381cefc4e552eb92a600c9da7356105 SHA-1: ed785ca8bf90dd6c9d915a0a71dd6ab7030a08a9 SHA-256: 26186d94f162abf57bf0c38942c80b630e58026c360f563b94fc03e39123a947
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a phishing lure, indicated by the 'SE_PASSWORD_ARCHIVE_LURE' heuristic. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a dropper or redirector for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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 https://coretry.ru/uplcv?utm_term=fortnite+henchmen+sounds+download PDF link annotation
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/1ue4add3f29h5fmvjr8cdud5p6/36469263989.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/k5pifa95di3gh3r8mnn2l5jmb1/sifegasanonu.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/mirodanasuliz.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/4ce916ca96c11caa2f03e1285b08720c/moduvogewe.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/dojofoxanenivaxijoxoda.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/sanonadiju.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608eecd89d176---52431856866.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16080ab51d9640---keletupibevixozelu.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f078e3fc8a---26881045039.pdfIn PDF document text
    • http://airsoft1.ro/files/file/novosewifef.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/7012946247.pdfIn PDF document text
    • http://bestbelly.org/content/files/files/2718490122.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/zojukaga.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160aefecfcd9c8---tebivagasi.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/lidepumotuxuxora.pdfIn PDF document text
    • http://wenxuezj.com/images/File/varelituruzipupalekibiba.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/45659912e3cc830be4f00bc36882d026/30806613337.pdfIn PDF document text
    • http://dailycan.com/userfiles/files/tafopoguvon.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/bbde3d588c5bd6827ddf50685162f807/31165534002.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/95510281712.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bcff1abcce2---movozetukojanabeso.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/vasosixefuku.pdfIn PDF document text
    • http://insidethedigitaltrend.biz/userfiles/file/lixotudiwubupuvidesop.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A8 10800 bytes
SHA-256: 3a65d144db37115042538cdb61f7266d8db22aceb84333c95b4fa045d71a9dd2
font_01_sfnt_off0000ec62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC62 17288 bytes
SHA-256: 95a93541d7f6816fe9e2781f2530cc3a43a795ab7cdd3eb18bb4f4fa2d89966e
font_02_sfnt_off000119d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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