Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cff3105a79f92f…

MALICIOUS

PDF

68.6 KB Created: 2020-11-07 16:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 784a7d10094fa87b28b6694e251dc450 SHA-1: c49c2209dcc6840d125c921c471ff544779eda87 SHA-256: e3cff3105a79f92fb9524572a1332ecd54e147b0f615c931cb5b15a8099174e3
126 Risk Score

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.
  • 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://traffset.ru/123?keyword=my+lifetime+dot+com+activate PDF link annotation
    • https://xasugalepo.weebly.com/uploads/1/3/4/3/134311154/7ae10509fe16.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/lifis.pdfIn PDF document text
    • https://subefivu.weebly.com/uploads/1/3/4/6/134688636/gawasaxafofeb.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/xirusej_wejinelerukuxe_bizuxazixipa_tifukak.pdfIn PDF document text
    • https://turikiripejuz.weebly.com/uploads/1/3/4/5/134501804/e562e67.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5f923e3de7d82.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/risisipajole/76126318933.pdfIn PDF document text
    • https://tilokas.files.wordpress.com/2020/11/ford_340b_tractor_manual.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/74776305360.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/bad_girl_bible.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_off0000bff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF0 4740 bytes
SHA-256: 8e82de6755e49efd75293eaaeda37c9bc3db01b98bd53e7214158dad7c1f1096
font_01_sfnt_off0000d02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02C 12104 bytes
SHA-256: 2f5d69b1420d59f310bd6f813e5ba7738278ad1be54fc02567b5970cf51b70c2
font_02_sfnt_off0000f790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF790 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176