Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba1ebf9afc2647a…

MALICIOUS

PDF

71.0 KB Created: 2020-11-10 18:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1517591bef6c53e514055e5430d40bca SHA-1: be11850c6f78fcd252e6811ef6e3403773bf260d SHA-256: fba1ebf9afc2647aa3a4e5450a3ea4d20bc505e69e4b2ad0bcf70af9968f407e
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Scorpio motorcycle alarm manual'. The presence of a malicious redirector and a link farm indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gettraff.ru/strik?keyword=scorpio+motorcycle+alarm+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5f88b0d57637c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_5fa9c2bbca584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8899294841b.pdfIn PDF document text
    • https://nirawulef.weebly.com/uploads/1/3/4/3/134324477/f9e676c4d74f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388627/normal_5f9dcf8e3c802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f8a133122389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392472/normal_5f9f071e74991.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
    • https://s3.amazonaws.com/xanebavifamopez/3096945638.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/atoms_bonding_and_the_periodic_table_pearson.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/the_st_martin_s_guide_to_writing_12th.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/3839429404.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/a_writers_reference_8th_edition_diana_hacker.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/kagelitipemadaxalome.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_off0000cc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC86 4988 bytes
SHA-256: 0976c214e824460d193307a81ee07126fa926bf3f2633860998d69d909c1a9df
font_01_sfnt_off0000dd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5B 10564 bytes
SHA-256: 44f6cf83e19b7b2c89494868b4be0597ed281195e19be27fd606c74ab3b7e1af
font_02_sfnt_off0001014c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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