Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2716e72082d9b1…

MALICIOUS

PDF

35.7 KB Created: 2020-10-27 17:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 019f64e79ca7050db31645f534c4d591 SHA-1: 3d2b9e392109457a99f6169b0e75633db3a289a2 SHA-256: 0d2716e72082d9b154d043dd8fbb2e0a0d6a149528f19feb7697345dda1ec7c4
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.link/pify?keyword=pearson+myfrenchlab+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5f962dd517a86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5f9090f290dae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f92c328b4d4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5f8c171a2be48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5f9080a6bb176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f8acdfc74b76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_5f96c458f1b74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_5f8cc4d5dba4a.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/xanirakiwejo.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8d113dbc76e.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/vuweluriwijaf-faferapo-dozonunovoxegum-kumapilaxi.pdfIn PDF document text
    • https://lisoletabe.weebly.com/uploads/1/3/4/5/134511207/podafonutivaf.pdfIn PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/4e761a429.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/vamefuxuxufib.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/wadebo.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/a7d046461a9ec.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/6f32122967ed08c.pdfIn PDF document text
    • https://wogijelagorezu.weebly.com/uploads/1/3/4/0/134096035/guraxajividiz-zibaju-nalafepedij-gololenotesox.pdfIn PDF document text
    • https://xumogaveranowiw.weebly.com/uploads/1/3/4/3/134371782/lakewitogo_jozalika.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/funirawebisepamix.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/wavokifizinot-penifurijigus.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004d7f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004d7f.bin)
    • https://uploads.strikinglycdn.com/files/b37c8087-958f-4bd2-95a0-3574dc76cf39/test_de_cleaver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf313324-fa13-4144-a992-1330f2c08a1c/pofesajonuwa.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 extracted file (font_00_sfnt_off00004d7f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7F 5456 bytes
SHA-256: 8effdde6af7d6088accfa3e108a9e935b916e6a890dd08ca9bf9a2042d729a7a
font_01_sfnt_off00005ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 9960 bytes
SHA-256: 78b26f0b91b303146ada7cf594663129c00ba09a05ec5e77574621a15de3545b