Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe94336f68370a5…

MALICIOUS

PDF

68.9 KB Created: 2020-12-17 14:29:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c728c5ef9427cc6f5507aa8797919bb2 SHA-1: 85402f93f6ab380c5600931a10e25d25d1df9942 SHA-256: abe94336f68370a5e0036ee6d32b46ff6c331586ef30b056dd00d1268c33b281
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The primary malicious URL identified is 'https://trafffe.ru/strik?utm_term=wow+classic+the+angry+scytheclaws'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://trafffe.ru/strik?utm_term=wow+classic+the+angry+scytheclaws PDF link annotation
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/6b5e266375e1915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425727/normal_5fb28725a4ea2.pdfIn PDF document text
    • https://datugabow.weebly.com/uploads/1/3/4/7/134745554/f61652f6c.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/eca97cf0-7320-4f25-8fa6-48289644c070/43154297261.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc540e317e720264006b16d/t/5fcb9eb66e74d26c6f0285bd/1607179959414/tap_titans_2_build_optimizer.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/74439941447.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3769dc89e1c4b8fcecae8/t/5fc4fc72f3de5e49b501c86b/1606745208055/74560225546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d0b9392-056b-4596-9f76-cce3c13aaac0/abstract_algebra_solution_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd13ed31dcc34bf48d61e7/1606226926023/oval_bathroom_mirrors_lowes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54b8ff7cf8c754047d5ed/t/5fc62cae3485235c869954f3/1606823089234/outbreak_attack_rate.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/jupepemugavubagosin.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/commandos_1_free_for_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5677ef9866f3fd2f21712/t/5fccc0b2fe657040d58ef035/1607254195166/wamejobudemajozoxofajo.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/passport_renewal_form_ds_11.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/98350488514.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/81671244890.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_off0000d09a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09A 5268 bytes
SHA-256: 17a75be2913da7076f571229c8a6e4f7bdc849966afeca336c025afd78b981db
font_01_sfnt_off0000e29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 10676 bytes
SHA-256: 4b4238b1280143754d2a5e75ca16b9e5ee54440a0dc05f9d4edbe47b0768da9c

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