Malicious PDF — malware analysis report

Static analysis result for SHA-256 651da8cff9aeec98…

MALICIOUS

PDF

61.7 KB Created: 2020-10-16 07:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3862fd991c10d4403f2576f336a07d64 SHA-1: fb208b459ec813991872d1f38eb22694952f4ca3 SHA-256: 651da8cff9aeec98183c74c97cf9745a574b47e22fa61a391ecbff6b616c8c6c
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://ttraff.me/pify?keyword=deepak+chopra+metahuman+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f891316bad43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f892248796fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f878fcb397e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f88746f9b2e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f87254f73a84.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/2c015222af918b.pdfIn PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/rotapulofiminiju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f88cf9197898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5f88c3dcbf466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f834dd332.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f871fd248885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f889eb06400b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5f88c0523432d.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/6888629.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/zanipixon.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/5040271.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.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/1/0482/8761/3096/files/26553847614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/83124272646.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB390 5248 bytes
SHA-256: 25089e2c1b66ba8e6973f5acdd182ab7dcc39bf82c0359d9ce1b78329885fbfd
font_01_sfnt_off0000c548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC548 10592 bytes
SHA-256: 234b298cb74a6443edf13af5aad11703399b46161edbe15fa7335a11d7d283f1

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