Malicious PDF — malware analysis report

Static analysis result for SHA-256 916c5101ad3dddd9…

MALICIOUS

PDF

75.5 KB Created: 2020-12-31 18:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7403508cb1b5b6982099ef3208e58f60 SHA-1: ee93c2aa19ff46bfa3aafe143892a27a283506dd SHA-256: 916c5101ad3dddd953f1109e0483bb0b83e451f199f0fee27b14ea75de2796a8
244 Risk Score

Malware Insights

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

This PDF document is classified as malicious and contains a large number of embedded links, many of which point to disposable hosting services and redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to firearms supply, suggesting a phishing or malware distribution attempt. The embedded URLs are designed to lead users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ggtraff.ru/strik?utm_term=sure+shot+firearms+and+tactical+supply+pasadena+md In PDF document text
    • https://vexuneka.weebly.com/uploads/1/3/4/5/134584550/lonojavovuwabox.pdfIn PDF document text
    • https://xarugowa.weebly.com/uploads/1/3/4/7/134733051/8369356.pdfIn PDF document text
    • https://xizodekez.weebly.com/uploads/1/3/4/7/134769153/0089d9a4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_5fb8815cb3093.pdfIn PDF document text
    • https://lamalirigade.weebly.com/uploads/1/3/4/5/134595912/9793036.pdfIn PDF document text
    • https://sakotitalivuvu.weebly.com/uploads/1/3/4/8/134887700/3997240.pdfIn PDF document text
    • https://pudafakomixi.weebly.com/uploads/1/3/4/5/134506615/vugemepaler.pdfIn PDF document text
    • https://xisedemagi.weebly.com/uploads/1/3/2/6/132681548/mizemem_sojirof_xozujalava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5fa36b9c32cf9.pdfIn PDF document text
    • https://derutibedevore.weebly.com/uploads/1/3/4/3/134354066/731332.pdfIn PDF document text
    • https://cdn.sqhk.co/zubuwebofe/geigwgh/halloween_coloring_by_number_pages.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://marezovunit.weebly.com/uploads/1/3/4/7/134719427/duwupefiwesow-muxoju-soxebumanivuru.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/fanujumivijo.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/OUgdljB/66449857948.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/south_african_doctors_note_template.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD746 3980 bytes
SHA-256: 54e6b836fbeaa788f339474af149e6381ccf33f683c08c261f695b04611552b5
font_01_sfnt_off0000e58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58E 5600 bytes
SHA-256: 317236b750d8716abb375b35c2abaed34ca5d718c5cf0d112dcaa0d0ea78a8d2
font_02_sfnt_off0000f87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87C 11592 bytes
SHA-256: 55f5a32fc761c4e4406505984ed17e677baeab7369bc08e64e112fc36be60b76