Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd6ff3b9a7d5856…

MALICIOUS

PDF

40.5 KB Created: 2020-10-09 01:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0de9db66e803365a9bd56634c2197649 SHA-1: f11b8377cccb8b41ce40705e76048ea4a6e5ec08 SHA-256: 1cd6ff3b9a7d58562137a60c06899b84b8a71555ef269437a12e24ba30908ba5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.club/pify?keyword=comcast+business+mission+statement In PDF document text
    • https://site-1036814.mozfiles.com/files/1036814/bumarelaw.pdfIn PDF document text
    • http://files.firstnewark.com/uploads/1/3/2/6/132695334/8296033.pdfIn PDF document text
    • http://rerut.traceyknapp.com/uploads/1/3/0/7/130776132/6182988.pdfIn PDF document text
    • http://files.aggoraespices.com/uploads/1/3/1/6/131606347/04afe.pdfIn PDF document text
    • http://kaledi.ztkarl.com/uploads/1/3/2/3/132303156/e032f6.pdfIn PDF document text
    • http://files.raleighgardiner.com/uploads/1/3/0/7/130775275/fuperutoxi-pukabagap-zojuxanakof-tonabozizo.pdfIn PDF document text
    • http://files.upstartglobalenterprises.com/uploads/1/3/0/7/130775085/napojewet-tukel-kajog.pdfIn PDF document text
    • http://files.blamefunnelcreative.com/uploads/1/3/0/8/130814085/sinujilesu.pdfIn PDF document text
    • http://panaze.sarahitkin.com/uploads/1/3/1/4/131406925/tawafiwi_gosozopolute_nupidalejejisu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/lebowisetitikenizujela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7890/4736/files/voluzodidizuvamufuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/80790329963.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_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 4864 bytes
SHA-256: 9d72da503b037205b86775bf149fbb28c6bbd23d6c3a77acdc2887f3d9656cb9
font_01_sfnt_off0000718c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 10560 bytes
SHA-256: b9224b06e98923bab2692433d148d1068065b4e9e72bf7e0c59525efeb503c96