Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7d6b05d2aa9ec9…

MALICIOUS

PDF

78.0 KB Created: 2021-07-02 00:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9f7f02592df2b4fdc504c15b0c04da15 SHA-1: 4209f261d57098b4522139aa6f7c91a8c96b7631 SHA-256: 0d7d6b05d2aa9ec9c733728220e8c4ad7fe5e6219ef6cbd50f6e657c595fdea8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. Heuristics indicate a fake invoice or payment lure, and the presence of ClamAV detection for 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and URL patterns are consistent with a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://crewmak.ru/uplcv?utm_term=hawes+western+six+shooter PDF link annotation
    • https://loctra.net/userfiles/file/nezirubasigajaz.pdfIn PDF document text
    • http://ledson.ru/upload_picture/nigazegepaduloxijemezesa.pdfIn PDF document text
    • http://www.moyekolodin.com/files/fexezewovuji.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/17e67aa3ad5bad3faa737ecfeff4bffb/49475573390.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/tugorovubiwo.pdfIn PDF document text
    • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/2343410060.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d30a6d5b4---9791313684.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/nipedelo.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/7542624113.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/19284963394.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b66a23315---kawex.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/51441490867fb7626d6137fed6af8bf9/nigizijurarumur.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/ginekukodelebepafa.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a84e1bc1e6---vagigarifuda.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a84700dd35f---zalukonamidutetifufu.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/34423952923.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfdd1408af2---30908388599.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/1sqsnqfrth38jime48r2kfbuae/2034809045.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/e2h11610p5msfk4a81ihj3811e/42200770560.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767f15500fe---63520830105.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/e36642085e6b6765783d0369c72bb926/22009641316.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608018b928c06---migakinimipafulib.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE17 17316 bytes
SHA-256: 1f63388a6fe42fdb852cde970183adeec1e974406c48112b633856e5cf4ff516
font_01_sfnt_off0000fb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 10340 bytes
SHA-256: f808e6e923596e66f29e531013f36d3d9ea13d1caaf22943816f69dbf16ed23b
font_02_sfnt_off000112f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1