Malicious PDF — malware analysis report

Static analysis result for SHA-256 629aba1d8e78dfb2…

MALICIOUS

PDF

47.5 KB Created: 2020-11-07 07:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2109f3e4a6fb20e21de086b5cfb2521b SHA-1: 9de611f0906d27b95d248556f4c124d93669e499 SHA-256: 629aba1d8e78dfb2475a05ba2844b2ddf4f41610163c1d5220369a8f66fd981c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?keyword=apk+vidmate+pour+windows PDF link annotation
    • https://fenorave.weebly.com/uploads/1/3/4/6/134639489/7e00462476e.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/gelovejoxab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374376/normal_5f89ceec5058a.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/nejuvamexuxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gizaruw.files.wordpress.com/2020/11/pebubu.pdfIn PDF document text
    • https://ripigewub.files.wordpress.com/2020/11/77773770988.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
    • https://nafixeke.files.wordpress.com/2020/11/biochemical_pathways_poster.pdfIn PDF document text
    • https://fudatagito.files.wordpress.com/2020/11/fisudupiraxagefitokurav.pdfIn PDF document text
    • https://zupabetoki.files.wordpress.com/2020/11/15919274673.pdfIn PDF document text
    • https://fodabijiwifi.files.wordpress.com/2020/11/mudosu.pdfIn PDF document text
    • https://dutekosakiwe.files.wordpress.com/2020/11/fallout_new_vegas_modding_guide_2017.pdfIn PDF document text
    • https://jikuboji.files.wordpress.com/2020/11/bosibixival.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000600a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 5276 bytes
SHA-256: c5f4d1afa2062043a9665f16a25274122300f22765290d7a7502312c6292da2f
font_01_sfnt_off000071f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F8 13032 bytes
SHA-256: 0565834222627af9b36c6ddea67c98f1bb0be1f5fbc806eb622f658a044035ac
font_02_sfnt_off00009bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFB 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b

Open this report in the interactive analyzer, or submit your own file for analysis.