Malicious PDF — malware analysis report

Static analysis result for SHA-256 69adb464a00924f6…

MALICIOUS

PDF

84.7 KB Created: 2021-09-03 16:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: eb015febee71b4012f6c4ed3b83bbe4a SHA-1: 0053a7cf145f043e64b8d814ea636b30d03d236e SHA-256: 69adb464a00924f6a60f4872d15e3d7f94c76055e2a499914509b0d02743428e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, several of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded links point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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.
  • 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://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/a126k178g56mltk89niuolffc1/podasuvalusowu.pdf In PDF document text
    • http://szcftz.com/upload/jepade.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161234fe704668---powan.pdfIn PDF document text
    • http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/88623141846.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/iibl31hnha9mvfcah9b63mkanu/fusakitolexagedawazezu.pdfIn PDF document text
    • https://maintogelonline2.org/contents//files/nedafifadetividutefawejak.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0e939f829---59177061580.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/89137770216.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3cd487635b---domusowafaxexexudemo.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/tuvelosir.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c709a41a775---9005449222.pdfIn PDF document text
    • http://haai.org/upload/file/bakusemabozikifarojike.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/29336684417.pdfIn PDF document text
    • http://1night2day.com/ckupload/files/vizaramefevudonitefug.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/marikadesajer.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/ximexofonaxunedowezi.pdfIn PDF document text
    • http://xsteelstock.com/d/files/xilutun.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/tolitulaxobitazudevazuva.pdfIn PDF document text
    • http://arcadia-fitness.es/userfiles/file/vilamajasabula.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/7b195f7fe238855ca821cbc122e835a5/tafiz.pdfIn PDF document text
    • https://campermagazine.tv/public/file/49545831522.pdfIn PDF document text
    • http://mmprogetti.it/userfiles/files/minitamevoravo.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/najazabibo.pdfIn PDF document text
    • http://asqcert.net/files/files/sovevonizurititozovaburu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=cimbali+q10+user+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_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE72 10644 bytes
SHA-256: b042a05a4b3b40dfb246aa2989310bbb20c1ae268905114cd90d18e881142bdc
font_02_sfnt_off000116ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116CE 18052 bytes
SHA-256: e1968b84af644c23d335e3cd1e1f51328943a5bf56627273ae2f20b71dcbf1f6