Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc6bfc76e61bd9b…

MALICIOUS

PDF

41.0 KB Created: 2020-09-30 13:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b1f967320cb5576a7fb4a806632ef4db SHA-1: ee9f30f4b1f6e244eb9b24367a1b26e3e3db0d22 SHA-256: 3fc6bfc76e61bd9ba00380cbfb1e3dd26937edc122d196e376091f48c7b29e0f
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=8+week+workout+plan+to+get+ripped+pdf In PDF document text
    • http://tapefir.bestofbothworldsnc.com/uploads/1/3/0/8/130874478/vijoga.pdfIn PDF document text
    • http://xabiroto.briarmere.co.uk/uploads/1/3/0/7/130739088/muromeneg.pdfIn PDF document text
    • http://files.trilogycounselingmn.com/uploads/1/3/0/9/130969824/3f68d3c88c.pdfIn PDF document text
    • http://files.icrc2019.org/uploads/1/3/2/7/132740285/tefokanuda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1fb42e8-7557-49bd-b8de-1938d1f33948/9775160931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df444bbc-0000-4455-8f4c-d4fb456f2892/xijitim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1bd1167-74aa-409a-a68c-07323cffcc31/koruzabufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c514f12-3440-41b0-984f-a14f9e50fa3f/39461506068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877426e1-a66c-47e5-9295-9d46d8da0a28/kovajifoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d8e34b-11f6-4d1c-878a-9e4fa4110faf/81020046514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf3813ee-cbc5-4ba6-b92d-167c719339c2/jepuvoketubino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d63f9e6b-fa0b-418f-b31c-6cc0a08fa576/bojivokele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd410221-1754-4a09-a00b-1cf1a542930c/kavobosijajanipetog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f6f33a-a725-46d7-b682-f6d330118696/gifaso.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000627a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 5284 bytes
SHA-256: 8a65e1368967b7a853109a4d81eb8c41df2e2d9209bf4706e03df681f8d319b0
font_01_sfnt_off0000749c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749C 10208 bytes
SHA-256: ac4f92873b3e42afb409d53a2fa8337a3b66a0302518d54bdc2a7ee0f7a04c3f

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