Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bd244d7f09382d…

MALICIOUS

PDF

34.8 KB Created: 2020-11-09 14:35:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 55c004a998608ec959e5736b5115db1f SHA-1: b57374997bd2877d2fbed86a7b9f15c879ab7698 SHA-256: 20bd244d7f09382d04ced1b03eb64a1979516db00585099ab64054e4a79e76b4
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links, with one prominent URL pointing to a suspicious domain. The ML classifier strongly indicated maliciousness, and the document's structure suggests it functions as a link farm designed to redirect users. While no scripts were explicitly extracted, the presence of embedded URIs and the overall heuristic analysis points towards a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=bright+star+around+we+go+activity+center PDF link annotation
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/turapofovakave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372361/normal_5f8aa8190b8bd.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/6160295.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/7e7d7ddae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424696/normal_5fa2a312eab10.pdfIn PDF document text
    • https://wigapekowuv.weebly.com/uploads/1/3/4/4/134488511/a58c7.pdfIn PDF document text
    • https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/bbc379a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fa6615635bb5.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/3852789.pdfIn PDF document text
    • https://mulivora.weebly.com/uploads/1/3/4/3/134382764/sumojurim_mepebazasase_nirogaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/32979008509.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/todevid.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/38224856385.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/falling_in_love_song_list.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/zambian_biology_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/catalogo_botas_price_shoes.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_off000047c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C9 5472 bytes
SHA-256: 58bc136fa33c5c06709615c15eb287d4bc068d2a1d2a030f8a5b9e3117071d35
font_01_sfnt_off00005a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A80 10508 bytes
SHA-256: 0abe3277ffc105c61784df78b09232c5f1f80dbdb61288e214b3f561ba0656d7

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