Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7fbae87d25a5906…

MALICIOUS

PDF

44.8 KB Created: 2020-10-12 01:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 23822a06a04ca697d67a69fafd3ba016 SHA-1: 76122c895fd4776ece600be47241bd4412be433b SHA-256: c7fbae87d25a5906add726ac6dd0403a85930fd4fa2657bdce668733870fd965
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=jeep+liberty+2006+repair+manual In PDF document text
    • http://files.bonvivantgourmets.com/uploads/1/3/1/4/131452935/8320689.pdfIn PDF document text
    • http://files.wombcenteredcare.com/uploads/1/3/2/6/132695734/nafupumajagisiti.pdfIn PDF document text
    • http://files.aquieditions.com/uploads/1/3/0/8/130874600/46165be6c728d2a.pdfIn PDF document text
    • http://files.sellingmomma.com/uploads/1/3/2/3/132303068/6200501.pdfIn PDF document text
    • http://files.yaguaradragons.com/uploads/1/3/1/0/131070147/fubipomek.pdfIn PDF document text
    • http://files.detailersdirect.co.uk/uploads/1/3/0/8/130815664/roxefopem.pdfIn PDF document text
    • http://files.fairwaycommunity.com/uploads/1/3/0/8/130874610/zirubote.pdfIn PDF document text
    • http://files.moorhaystoneandslate.co.uk/uploads/1/3/2/3/132303035/sisivuravulava-girupobiwo.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/b2ce647f-a469-43e9-83ee-410ce158082b/modinovapexugelepowizef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129f71da-3c1a-43f5-9cd3-24d141b04f1f/43523908470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c616d59-4524-4a24-8085-0dd31bcb3c52/zosepida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c379170-fef6-4761-9b20-0bdc48d823ed/raxegasokuvemewesexudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/r_error_in_list_filesfile_ignore_missing_true_verbosity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/colorado_eviction_laws_roommate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6946/4727/files/first_aid_2018_errata_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4769/7061/files/govewubokujapipaxuxixo.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_off00007227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7227 5448 bytes
SHA-256: be9e43e4af69f29b2a31bd77907fc19b3e8f92819d4d50fa3f3e6a3cedcacf02
font_01_sfnt_off00008497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 9800 bytes
SHA-256: eebdc4df12de8f3719361cd43ad23d0f7da9d95ccd60a20212c5ac2dbaa3a6dd

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