Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ba980b41add826…

MALICIOUS

PDF

79.7 KB Created: 2021-06-06 13:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 85f1b25bc873fa4b5791b24bed31bd36 SHA-1: 14a0aca532dee65435e6875fade5b4329980b836 SHA-256: 12ba980b41add8268c12f847104bbda93580931a9008114213a35ae41ff5d565
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1553.005 Security Software Tampering

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of an instruction to disable security software further increases the risk, indicating an attempt to bypass defenses.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://garglob.ru/pbw?utm_term=epson+l220+adjustment+program+reset PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5fddc844d99e2.pdfIn PDF document text
    • https://gaxiliwila.weebly.com/uploads/1/3/1/3/131383945/pifavoguxobam_pezofuloti_lefediruja_letegele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_6019102b6ed03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_6018159bc82e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378381/normal_5ff59e3de0d49.pdfIn PDF document text
    • https://fulerisigimigo.weebly.com/uploads/1/3/4/5/134586495/af788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_602d20e551875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425738/normal_5fe6dbad52076.pdfIn PDF document text
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/2d6a3ba161.pdfIn PDF document text
    • https://wivusogonelom.weebly.com/uploads/1/3/5/3/135310870/1b4ac7.pdfIn PDF document text
    • https://fugokepak.weebly.com/uploads/1/3/4/8/134856046/wigopipojaluzemir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421062/normal_601f11192b427.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4380079/normal_60b3abf3d1c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498376/normal_601faf335b355.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409123/normal_603a5c9249c7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455195/normal_5ff53dc741c6a.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/miviweselu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_603a852ec1695.pdfIn PDF document text
    • https://rogetaguw.weebly.com/uploads/1/3/1/4/131407632/sekenupefemaj_zanaju_nomuz_jebov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sakulibur.pbworks.com/w/file/fetch/144629304/xoxajubixerazupoweze.pdfIn PDF document text
    • http://tazijebep.pbworks.com/w/file/fetch/144605487/61777649959.pdfIn PDF document text
    • http://tikomegeto.pbworks.com/w/file/fetch/144566736/70032285075.pdfIn PDF document text
    • http://lojefizowoj.pbworks.com/w/file/fetch/144680673/how_to_use_the_apple_lightning_digital_av_adapter.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_off0000e971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE971 5420 bytes
SHA-256: aeb2e6b80bea862da9f0400d72deba775b777aae59d74439af2228d604ed3d41
font_01_sfnt_off0000fbc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC8 11284 bytes
SHA-256: b2d188c055edf2604382910b4ab6220afdb2c72610f09d8c75e765d02cbdede9
font_02_sfnt_off00012181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12181 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34