Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fdfeb89992e3012…

MALICIOUS

PDF

75.2 KB Created: 2021-02-27 03:46:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 00f040d718a6ddbd2dfd014a9cd824af SHA-1: 18ba59da53e1e5b85d4c15460b9680975c8188c2 SHA-256: 0fdfeb89992e3012bfa3c2df94e88a63dad8adfea100094b5235cdc54f2b31fe
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs pointing to various domains, many of which are disposable or associated with link farms. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous links indicates an attempt to redirect users to potentially harmful external sites for phishing or malware delivery.

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://gimoguvi.ru/wb?keyword=what%20is%20the%20main%20message%20of%20a%20rose%20for%20emily PDF link annotation
    • https://cdn.sqhk.co/rivitovolu/Qhggigd/vemomew.pdfIn PDF document text
    • http://xrootunited.com/kadutivajezorasoretege6y059.pdfIn PDF document text
    • http://aycotoro0.xyz/bofol7aaiz.pdfIn PDF document text
    • http://fastdonwload.space/fall_guys_ultimate_knockout_gameplay_trailer8j0yu.pdfIn PDF document text
    • http://goldenframecollision.com/75920432453373gn.pdfIn PDF document text
    • http://feyakast.online/99985129499ghjpz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393358/normal_5fdeef6e7464a.pdfIn PDF document text
    • https://cdn.sqhk.co/xukerejolar/geibibv/best_streaming_apps_for_android_phones.pdfIn PDF document text
    • http://domensita.fun/minecraft_pc_full_version_windows_107ccjt.pdfIn PDF document text
    • https://cdn.sqhk.co/vujuzira/b138lii/dovubanutumoluwevozifi.pdfIn PDF document text
    • http://nubolutlion.xyz/libro_las_meditaciones_de_marco_aurelio_frasesglu53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_6008e445ab743.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/sea_fishing_rig_diagrams.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_5fe9b29e8e23a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_603684bc92876.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jaxegowanav.rf.gd/3322570808.pdfIn PDF document text
    • http://lazefip.epizy.com/motorola_sbg6580_help.pdfIn PDF document text
    • http://bugenerefajujus.atwebpages.com/smart_watch_bands_ebay.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_off0000eacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACD 5296 bytes
SHA-256: 958d3aeba0c02e3be921246331b358a0872f4a4fb8c24123533de95b5e8fae54
font_01_sfnt_off0000fcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBD 10020 bytes
SHA-256: 7f8b3668f66047ec405d4406df48f4950799706b33f4bd63cd19bbdad7bf4c1a

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