Malicious PDF — malware analysis report

Static analysis result for SHA-256 633fa0f0892df0db…

MALICIOUS

PDF

45.0 KB Created: 2020-10-20 11:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c158be56f776cc2ee6eea752cd5d30a1 SHA-1: 26137a947027301000832bf3dc969970de53636d SHA-256: 633fa0f0892df0db9ba9b5e697994c2d03683073f3127269b8f30e47b20a2c49
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://ggtraff.ru/123?keyword=metal+slug+x+apk+revdl In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/74b1d0f71.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/kejowuxagatof.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/gipipamiv.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/09427c23789b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f87c2336c69c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f8cb96cefd54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8e19ab98c79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f8a30729b365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8770f953a88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5f8b3a922c3e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378379/normal_5f8d56a17fc8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5f8a97dc836ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f87ca51a7d4d.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/xodibebovakafe-fosurapifibuna-xewaf-vilujetugowuva.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/6d9f72702a9dd46.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/zikula_kalefiwopuruda_rerobiza.pdfIn PDF document text
    • https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/90b75.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/656514ec-0726-45c0-a2fd-8ff2174281aa/66287033360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729a8fb2-4d5a-464e-9929-517699920de0/bubogide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/098aa2d1-99ba-41d4-9547-901106ca6e95/wenogezesudibubiwebogari.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_off00006e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6C 5324 bytes
SHA-256: 6193d6f1baa056fd202f919218b6bd48fe1ecb4b096bc3474f8705b9bb49b8ce
font_01_sfnt_off000080aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AA 11048 bytes
SHA-256: 9dc31220e2c6c220b32b4f6cb698444b2571f57f30ac49d7dd10d055bf8d89ad

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