Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ccc1f1f0f83ad4…

MALICIOUS

PDF

42.6 KB Created: 2020-11-08 18:06:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b86a63f7e1d92746316639b2caa3c6bf SHA-1: b92fbfe8cb0d8f4a013856bd3ff08709ec3e6273 SHA-256: 05ccc1f1f0f83ad49567a7a093e98466b620ee722c71c2a6348be127b25f8901
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, https://trafficel.ru/123?keyword=fortnite+stats+tracker, is directly embedded in the document body. The presence of numerous links suggests an attempt to manipulate search engine results or redirect users to potentially malicious sites. No scripts were extracted, but the structure and heuristics point towards a link farm or redirection tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/123?keyword=fortnite+stats+tracker PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f8728569a3fe.pdfIn PDF document text
    • https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/2288643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_5f99263555956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_5fa0ed7d7ff31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f892047276e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377100/normal_5f97b54eced8f.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/sipumotedinepeb_lesuzumedezal_pilarezuzur.pdfIn PDF document text
    • https://rotafejejulivis.weebly.com/uploads/1/3/4/5/134599198/8340305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifiz/here_i_am_to_worship_chords_key_of_g.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/defend_new_orleans_owner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c44c6d-4021-48b9-8607-bc4239598faa/dogeminer_2_unblocked_hacked.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_off00006866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6866 4780 bytes
SHA-256: fef5ba93dd990329096d7d224b52e25fa4d397c7b21930262d7e421deedc55bb
font_01_sfnt_off000078ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BA 10800 bytes
SHA-256: 3a085e24b6eb3026fe3d7262ab7f2a20a7ff4080a11b772455c1b0d96559ff7b