Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0521acef442bf0…

MALICIOUS

PDF

64.8 KB Created: 2020-11-11 13:51:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08c758ec012f7d82e9fade193058463b SHA-1: 9d364ca9fb35c7e47b1a030be5edea29118d1de9 SHA-256: ac0521acef442bf017afd23945e03c071e25c0599848faaba1fa8a613a21b9fb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://trafffi.ru/strik?keyword=all+in+by+mark+batterson+pdf PDF link annotation
    • https://juleladenoduko.weebly.com/uploads/1/3/4/4/134478401/vopozejomiwasadif.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/7e0ee588c.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/d8fcb5cc566fb4.pdfIn PDF document text
    • https://damafofazawarag.weebly.com/uploads/1/3/4/3/134369947/jazapozameje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5f96219a5622c.pdfIn PDF document text
    • https://gorokawuse.weebly.com/uploads/1/3/4/4/134489158/512571.pdfIn PDF document text
    • https://risimukino.weebly.com/uploads/1/3/1/3/131383953/memulodixuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f9a973688644.pdfIn PDF document text
    • https://garagagu.weebly.com/uploads/1/3/4/3/134364865/dugumebojer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/caadd006-d45e-4ac9-a69c-51077bbc9bbc/call_of_duty_zombies_story_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ae7618-1bb6-4745-8cfb-b9e7982aefc2/nerawategupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a998a999-53c1-4c53-a0b3-cb4f77497bad/quantitative_analysis_for_management_12th_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/figeviluw.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/gnome_cleric_of_sarenrae.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF61 5480 bytes
SHA-256: f178f910ad69948e619510a84dbd33e88effede68d1fea6307fc1078829a55ed
font_01_sfnt_off0000d1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F0 10880 bytes
SHA-256: 8b76ef6bfea999f4866bca2adf02fcd9d322fb34554b1454ee240eb30673d6ba