Malicious PDF — malware analysis report

Static analysis result for SHA-256 285a004743c5b6d1…

MALICIOUS

PDF

40.1 KB Created: 2020-10-09 11:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5d76909dd5b7d4398e19d646c8b1e254 SHA-1: 007d7f33353df5b7d9594d710ea3b3a67a9cada2 SHA-256: 285a004743c5b6d160d646982e3c2b5bc3307838ce15b7342140bf32e11769a3
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://cctraff.ru/strik?keyword=introduction+to+human+nutrition+book+pdf In PDF document text
    • http://files.songlinesaustralia.net/uploads/1/3/1/4/131454349/46a6df3.pdfIn PDF document text
    • http://files.howardinteriordesign.com/uploads/1/3/0/7/130740077/6557326.pdfIn PDF document text
    • http://zedunidak.erspamermusic.com/uploads/1/3/2/7/132741073/03339da.pdfIn PDF document text
    • http://files.reveriebelgns.com/uploads/1/3/1/8/131856539/684fedb991e0468.pdfIn PDF document text
    • http://files.bnnministry.org/uploads/1/3/0/7/130775513/315725644e1.pdfIn PDF document text
    • http://files.honeybeeandblossom.com/uploads/1/3/1/4/131453540/sirejidavijada.pdfIn PDF document text
    • http://zijilokog.emasullivan-bissett.com/uploads/1/3/2/6/132695839/ef1050cecbfed1.pdfIn PDF document text
    • http://files.vinylbandits.com/uploads/1/3/0/7/130738806/4305007.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/1/0430/4853/4167/files/la_fitness_flagler_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6331/9969/files/dilution_concentration_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/nojovabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa15e029-9788-4a10-b7bd-f99c78e284c1/12315925126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aebbf9f-2af9-4af3-8986-18ca005815c6/tokelebinasapib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8736afde-deac-44c2-bc3e-a15fe97f3061/95868591498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b828c817-b28a-4105-9bef-2332ee30c193/26056913217.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 8

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_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 5328 bytes
SHA-256: bcba1f3541dc3b2344cfc8a01e77539e98dd994c341e10e561fab76e2862103c
font_01_sfnt_off000070cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CC 10080 bytes
SHA-256: af2fb1c9567fe3ddf55184b1704c5fc52508f43134676e79da64a45c7ca829ce

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