Malicious PDF — malware analysis report

Static analysis result for SHA-256 f702aa307ffda1bf…

MALICIOUS

PDF

95.7 KB Created: 2021-08-02 15:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 78078aaa0bcfcb899aa335df67049617 SHA-1: b2014fde46447ab4521788d8e95fe321673fb002 SHA-256: f702aa307ffda1bf13837063b3b8fee5e0d834056a8f4c10017c4ebca0d51751
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to websites that appear to be compromised CMS uploads, indicating a link farm designed to lead users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent. While no scripts were explicitly extracted, the nature of the links suggests potential for further exploitation or redirection.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4108

Heuristics 5

  • 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
  • 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://bischofs-scheune.de/userfiles/file/61581106349.pdf In PDF document text
    • http://architettorobertafasola.eu/userfiles/files/zukipawobololefinorinuw.pdfIn PDF document text
    • http://slp70.com/clients/873855/File/judagonajozanag.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/a7bb81d8f98215912ef8a7b186517397/fitiza.pdfIn PDF document text
    • https://begili.com/uploads/image/files/sodunivejufojabopugivox.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5be96cfba---zisireluzozul.pdfIn PDF document text
    • https://coluer.ir/documents/file/mafenujetobomosuwumipad.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084869bc9857---29478495907.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/gbs241817o2ovifus46j2f6gj6/veganesojotexudil.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/47949290243.pdfIn PDF document text
    • http://evohome.pl/userfiles/file/85577158102.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/2a18abba09783dd39c72bbaf98297e3d/96423337886.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c49a6193de---74768586039.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c606dfdc2---22700863868.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/rivemuvufamutijawed.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c75b06f311c---vemonef.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/744cb35db16e5dcfa4885223d51a9369/nifilufuboxirimimutatura.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/bodujanugitagamefileviw.pdfIn PDF document text
    • http://bbbswalkforkids.com/clients/c/cf/cf8d0549bdc9bbdffca8bc0db9808b96/File/gelebiradajuromizek.pdfIn PDF document text
    • http://mamnonlittlesun.com/upload/files/sininokosej.pdfIn PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/fogipuwizadomi.pdfIn PDF document text
    • http://nuocmambason.com/upload/fckimagesfile/fe49d044d9f232212ec7bce04cebbe6a.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/116ac38am36r775er4r851dat6/sumoziwiverusugexeb.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d4d5b0ad4f2---76136967903.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/vetejizazanoxelazisari.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=la+agonia+del+eros+sinopsisPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C8F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001649c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1649C 2056 bytes
SHA-256: 2b17fe20a2b24faf8a28769399493e5dd2327d0cf5d7d0a7aa2737eb9f3c87eb