Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec32034bbc31865…

MALICIOUS

PDF

80.3 KB Created: 2021-06-30 06:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3c239d5a4fdd50148fbdeaa3129214d2 SHA-1: b59245dee341181fbe7a81266e9108941aa8177e SHA-256: 9ec32034bbc318657633f16c7b4bec4f9785f59aa0b4953c2cdefa361008cfd8
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL findings point to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/ae9db9a51fd473058d740a7936637030/87779674985.pdf In PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b7913d6cd---98917798488.pdfIn PDF document text
    • http://timebymtm.com/upload/files/83038074136.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160903abcae4e8---gezonapibabokireniwix.pdfIn PDF document text
    • https://zevkotodoseme.com/upload/ckfinder/files/65222988357.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/ot3vr4f52kuollrg7jn3u1dfkp/98905574610.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec547199aa---44809971103.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607afa19918ef---memagawapufiva.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986b564d32c---pelavawevi.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/o8g9olevjiirq1rcn654qneu74/nuxemipemu.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cac0a908284---26580599720.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/nepevagutuzepovujewovikez.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607140945b500---pepoxinovitezesaz.pdfIn PDF document text
    • http://palenice.net/obrazky_clanky/file/poniwad.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bab0b9cac83---fimeraterizufuzabexo.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/7c4c03ad843d719b777faec73566fd24/38368131097.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/kuvamupibemojerepudo.pdfIn PDF document text
    • http://ithaca1961.com/clients/875375/File/tizesigilego.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/d3cca694582fedc1918cae522b40d1c1/75211746344.pdfIn PDF document text
    • https://mdteam.se/ckfinder/userfiles/files/xufuxanotezadosi.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/o4agnij1pmn06lnjkivd0172e0/buwibewazozufozemuto.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/j3i20hnrv3cdshu7i8kqu0sov5/18882731043.pdfIn PDF document text
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/kakoruzepibufemipuj.pdfIn PDF document text
    • http://xn--80aikni6a0b.xn--p1ai/images/file/73605079341.pdfIn PDF document text
    • http://ddrwc.net/clients/869849/File/55387732187.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=just+a+little+bit+of+your+heart+ukulele+chordsPDF 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_off0000d2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E3 10904 bytes
SHA-256: acc69a9004af64f7ab10ea98401958b6c478f0c35f72ee3843e4dd72b78726aa
font_01_sfnt_off0000ec56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC56 17404 bytes
SHA-256: 4a15a494c6f7c9856aeee14ea018861b82406f0fcd016f82a018029cfc5e5612
font_02_sfnt_off000119e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1