Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a22aa2b2252bb9…

MALICIOUS

PDF

39.4 KB Created: 2020-11-07 01:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 81f6782dcae809b6ff32522849c8c8d3 SHA-1: 476b8b8d716cb913bacddbbdfdf1f5fe0a608582 SHA-256: a6a22aa2b2252bb995604216a91320cfe6fc245d3027b82b0eb9b4a1a164f831
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, with one specifically targeting "boo 2020 film" and leading to the domain "traffnew.ru". This suggests a link farm or SEO spam tactic designed to drive traffic to potentially malicious sites. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffnew.ru/123?keyword=boo+2020+film PDF link annotation
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/8791038.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/wagotopewowuji_nirawusi_wolowug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5f98f05343cb1.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/gajabedafot/solitaire_unblocked_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0c83800-ec25-4ff6-be6e-4a038904f94e/21781509922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b06edbc-f82a-4404-9782-5391a3157615/27891725152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aee88e8f-1c25-4f70-8867-778d9537d506/vivuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0bcc1c4-560f-4aec-84d7-6cd4e64cbf4a/84142086409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fbc6432-2cb7-410b-9b1a-349d557927c0/the_blackman27s_guide_to_understanding_the_blackwoman_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/non_commutative_algebra.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_off00005dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC9 4752 bytes
SHA-256: 761b2aad8112b93f68c333e538b450fc9af5b4ad70bc499b9f4448a7733f5a9e
font_01_sfnt_off00006df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF1 10320 bytes
SHA-256: a31a2e45ab63a007736d7a7daed17d497a84627bf122e32accdd9534ccd95435