Malicious PDF — malware analysis report

Static analysis result for SHA-256 5729597ee22c5fff…

MALICIOUS

PDF

43.5 KB Created: 2020-11-07 03:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0e0cbd2fdd680c6fd81c6d298a9e6a23 SHA-1: 70f6749808fa4c6e3ee7f8316ebb62f49d833cf3 SHA-256: 5729597ee22c5fff799ad0bf5bddbe9e84abbeb39bdf36aabe6f5dc59877d518
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://cctraff.ru/aws?keyword=lunluns+hands+free In PDF document text
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/dogubi.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/zedopomibonuvimewop.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/bad6e5fc2.pdfIn PDF document text
    • https://darurirajilubi.weebly.com/uploads/1/3/4/3/134318819/padajivule.pdfIn PDF document text
    • https://pixogapowirotuj.weebly.com/uploads/1/3/4/6/134641161/tezikufof.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/daseduzuvejilu.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/9327121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446496/normal_5fa4c0a7a5ad0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5fa1b4584af17.pdfIn PDF document text
    • https://modudipagif.weebly.com/uploads/1/3/4/6/134688888/b1f610cf81.pdfIn PDF document text
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/4620095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://goresab.files.wordpress.com/2020/11/54381570989.pdfIn PDF document text
    • https://sexonilapaxo.files.wordpress.com/2020/11/45851229289.pdfIn PDF document text
    • https://mubamumut.files.wordpress.com/2020/11/kuxivevuku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000620e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620E 4580 bytes
SHA-256: 2878de2d2671034d702a53133e58ef984f69793aa46a60ca7baca6d646f51179
font_01_sfnt_off0000717b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717B 9944 bytes
SHA-256: 83b894fe2bc8fa890f8966452272016cf955427ea0d9680055fa1e7580538936
font_02_sfnt_off0000935e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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