Malicious PDF — malware analysis report

Static analysis result for SHA-256 7434ad564e595908…

MALICIOUS

PDF

87.5 KB Created: 2021-06-14 08:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: fba7ceddb6cefd7f01697bd3177db406 SHA-1: 50e65387899058fcf288473d92caf74a3183a7bb SHA-256: 7434ad564e595908e080442362f04eaeefe6606101acc36e29cdbdd2d3f9765c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body references a "Gta 5 online casino wheel glitch" and the file contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms. These findings suggest the document is likely part of a phishing campaign or serves as a distribution point for further malware, potentially leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=gta+5+online+casino+wheel+glitch PDF link annotation
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160af96ed18c37---botapimijigifivan.pdfIn PDF document text
    • http://charivne.info/images/file/wufugoneboximiximaletalap.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/dbaefdcf218f5192846a1160c3018e75/58901053125.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/485be5aed04ee6af149bd682be102259/81576286961.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/wamirivafazuxusejase.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/d9edb71618e5e861c521f3cb52befcb8/93872734620.pdfIn PDF document text
    • http://poorclarescork.ie/images/32608688678.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606caabb223ec---51171031351.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/6e8qm9mdl93ek612advjjb47pn/57028709459.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/lidipewunonof.pdfIn PDF document text
    • http://mousike.it/img_ins/files/81588191577.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/xovekokupuze.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/1bda35b1ae2350516caa9c47388b990d/wetopufesowewopixob.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/ci3qa55njsuadv1nhfccs2ulv2/55833056849.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608181bc1d988---safonilubufonevizerale.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a410079fbc0---voxexoxomama.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11903 5212 bytes
SHA-256: a106a97d27d75e8496b43db258a4025e4bcc82495a89155d0e759c018ac4aa6a
font_01_sfnt_off00012ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD8 11252 bytes
SHA-256: 942ee602d6c2b11de6807e30c1d976130fa20c8fa8f9c2713b8ee095d5e4230a