Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e8982a9f0b2415…

MALICIOUS

PDF

45.1 KB Created: 2020-10-10 13:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2622fe4938478cdcbc4784f14fc3fe34 SHA-1: 669788723c6d7bdba35a5583517608ea1f5a54e0 SHA-256: 07e8982a9f0b241516bf06b87fa1a9b7c9101ed712b910f68328a68477f805a2
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://ggtraff.ru/pify?keyword=sfsu+spring+2020+tuition In PDF document text
    • http://files.casperstith.com/uploads/1/3/1/8/131856105/ralesatusimuwaxag.pdfIn PDF document text
    • http://files.beccajessee.com/uploads/1/3/1/8/131856594/42126c0716ae2.pdfIn PDF document text
    • http://files.babcockranchdragonboatfestival.com/uploads/1/3/1/3/131381259/weparujuw-fedek.pdfIn PDF document text
    • http://files.michellecobbin.co.uk/uploads/1/3/1/6/131606605/vetukavevugu.pdfIn PDF document text
    • https://site-1040438.mozfiles.com/files/1040438/37682328125.pdfIn PDF document text
    • https://site-1040383.mozfiles.com/files/1040383/jamigefaxudit.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://uploads.strikinglycdn.com/files/035feb17-f346-48ba-8aff-a4d1e3aeeead/9383531612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c30a4b79-c875-4c8d-8826-a848befad86d/89593788222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa0d54b-1d0c-4554-ad13-91ef3655c4e3/14328117269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba180c02-938d-4884-a2b4-ddf11503f479/69122980824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0768e6-bba1-4bda-a84e-5e82b3aeefae/bibuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/rdr2_white_arabian_second_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/pajikigufapolewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8908/2006/files/life_on_the_edge_tv_show.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_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 4968 bytes
SHA-256: 3d71d75cf7dfa431c00f1df7a0a6fa98aae304a76f54985d1f29b1aa450feec6
font_01_sfnt_off00007470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7470 10852 bytes
SHA-256: e2226cbcc5ae35acd81e6d5fce0ccb8d02e66c72aaff7ecfa8212ac2497dd3af
font_02_sfnt_off00009990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9990 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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