Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d7acfa70b15f6c…

MALICIOUS

PDF

110.1 KB Created: 2021-05-19 22:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d5446b5b236dce91f5e385b1215159d SHA-1: 8e399e622cff8cd5b70dd6d0019a84a202e605b0 SHA-256: 80d7acfa70b15f6c2d78991504783fa1d964064164b3c69a427e51d25feeca85
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a large number of external links, suggesting it is part of a link farm or SEO manipulation scheme. The primary URL, 'https://ponafet.ru/strik?utm_term=ejercicios+resueltos+perspectiva+isometrica+3+eso', indicates a potential phishing or malicious redirection attempt disguised as educational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=ejercicios+resueltos+perspectiva+isometrica+3+eso
    • https://cdn-cms.f-static.net/uploads/4380078/normal_605b95fb9b468.pdf
    • https://gitumakiwu.weebly.com/uploads/1/3/1/4/131437138/c9241fc6.pdf
    • https://cdn-cms.f-static.net/uploads/4379363/normal_60435d65e197a.pdf
    • https://fudakima.weebly.com/uploads/1/3/0/7/130739810/f382069f.pdf
    • https://static.s123-cdn-static.com/uploads/4413231/normal_5feb8f1e8499a.pdf
    • https://cdn-cms.f-static.net/uploads/4389387/normal_600e3e7cc93eb.pdf
    • https://cdn-cms.f-static.net/uploads/4371808/normal_600fbd19b35d1.pdf
    • https://cdn-cms.f-static.net/uploads/4422620/normal_600e8808bf9f7.pdf
    • https://cdn-cms.f-static.net/uploads/4472481/normal_60148a1dba426.pdf
    • https://cdn-cms.f-static.net/uploads/4498404/normal_6037a9448ccfc.pdf
    • https://zetozegazironik.weebly.com/uploads/1/3/2/6/132696155/d5b044b5788f4b2.pdf
    • https://cdn-cms.f-static.net/uploads/4374366/normal_602510d385d1c.pdf
    • https://static.s123-cdn-static.com/uploads/4453732/normal_5fec680094aa1.pdf
    • https://cdn-cms.f-static.net/uploads/4450439/normal_5fea1b3f5e026.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d37009cd-11d8-4e57-9bfb-0363a7004fd8/pewereboguxazukejamu.pdf
    • https://uploads.strikinglycdn.com/files/6bffad92-e50d-4179-aa67-9922182a83ac/auto_navigation_mit_google_maps.pdf
    • https://s3.amazonaws.com/fofeguj/saitek_x52_pro_profiles_elite_dangerous.pdf
    • https://s3.amazonaws.com/gifiz/nisuwurekaze.pdf
    • https://s3.amazonaws.com/punurum/construction_contract_accounting_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/82470cbd-f738-4155-b3f0-fb28caee30f6/lafometi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000140bc.bin
75b43aaafae153fd704ad56c580634378739b5a15aa3f54c5f83a04a71fbb0b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140BC 5112 bytes
font_01_sfnt_off00015228.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15228 1800 bytes
font_02_sfnt_off00015ab6.bin
af9150f9ecb452a7c7308686c27e637b84bae30e273f19fdc36ebbd1339fb4d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AB6 12728 bytes
font_03_sfnt_off000183d2.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x183D2 16312 bytes
font_04_sfnt_off0001995e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1995E 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.