Malicious PDF — malware analysis report

Static analysis result for SHA-256 654036872d9fa578…

MALICIOUS

PDF

85.9 KB Created: 2021-07-21 07:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b74c68977ffc2b8f50e4b2e6d8e4a75f SHA-1: c5cfa099db211fce88b3e077e26f2a36c31d947c SHA-256: 654036872d9fa5788b8719053a4ee06e411f0214d0f1b6d971fad53506aa8bcd
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and IP addresses, indicating a link farm designed to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. No scripts were extracted, but the structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4914

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://areicon.com/images/file/sonewawusisujepema.pdf In PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092337e6b05e---82488908369.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11e158e514---paremapileze.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/0143802901d4dc16699ab1a1b0377d7a/88353380639.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/juzalanepufaxafizap.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160945e10b2656---kokixugopepinavaxunafa.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/24490534006.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160732ba8c51ec---47991476014.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/38201112169.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/18544007596.pdfIn PDF document text
    • http://thietbiotovn.com/Images_upload/files/73342646111.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/92880889.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/0e85975c2e549e1daa25e4923508b8c5/lekesabevewikafolupe.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c979221137e---gazewenowovuwu.pdfPDF link annotation
    • http://21cedu.com/pds/userfiles/files/dasofanimasuzube.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/bupt2c7r545jqbeuhdmc0mubo5/doziwufakunavokaminosebim.pdfIn PDF document text
    • http://pitafest.com/clients/1/13/1337b7689af00ddd847345d48bd720ff/File/sezalatuk.pdfIn PDF document text
    • http://optimaglobal.net/ckupload/files/67850885686.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160957127d567e---89076989165.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f9995f55d945b4b5d3aefc4b5310d44/24168120199.pdfIn PDF document text
    • http://safarang.com/basefile/files/82095007122.pdfIn PDF document text
    • http://klefmarken.se/upload/file/wonolipigokugudox.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/88570379919.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/4596154338.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/4d9038f4cbe5ac9a5c47739966a82c92/pufakeru.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/rixikifuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=20+minute+workoutPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1