Malicious PDF — malware analysis report

Static analysis result for SHA-256 856ad9de36072e5d…

MALICIOUS

PDF

75.7 KB Created: 2020-12-28 22:44:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b683d6b8d79490b3d170f7779b55f855 SHA-1: cea88f6bf8a403ed853b3604dce8583b63070bb6 SHA-256: 856ad9de36072e5d3ae130719f9e29fdb4ae98c749d3c069442c907db5b52d06
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document body contains a lure related to 'Skyrim daedra heart console id' and an embedded URI pointing to 'https://traffnew.ru/123?utm_term=skyrim+daedra+heart+console+id', which is likely the malicious destination. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further suggests this is part of a link farm designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=skyrim+daedra+heart+console+id PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5fa1853104468.pdfIn PDF document text
    • https://sulorajezute.weebly.com/uploads/1/3/4/8/134854577/5666436.pdfIn PDF document text
    • https://xovobinawulum.weebly.com/uploads/1/3/4/8/134883327/37b3d3e1f8.pdfIn PDF document text
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/xawawak.pdfIn PDF document text
    • https://moxoviwepikiwu.weebly.com/uploads/1/3/2/8/132814726/basozalazutoderazavu.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/rususe_zusarareboti_nuvovupa.pdfIn PDF document text
    • https://punuvenow.weebly.com/uploads/1/3/4/4/134445800/lokido.pdfIn PDF document text
    • https://joxiwawetesamiv.weebly.com/uploads/1/3/4/3/134306419/tikan-vezafomovodo-viwixonejusezub.pdfIn PDF document text
    • https://kodepifaz.weebly.com/uploads/1/3/4/7/134705681/3249118.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/dazuxujepov/salesforce_admin_certification_test_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/executive_summary_template_for_academic_report.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/32439682620.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_off0000e101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE101 5448 bytes
SHA-256: c958366e22dc0fa1d411c7afc0eb63b0554143defad937a1531e27d84e6143bc
font_01_sfnt_off0000f365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF365 14076 bytes
SHA-256: 2cc2e2efbccc37b9e522e0ec74004d6974b0c4d800a3bd88d87593cf03b78f23

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