Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da055d6ab956043…

MALICIOUS

PDF

76.1 KB Created: 2021-02-22 00:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b66c6bea816250031abc7e630d508b1 SHA-1: 53a9b2f8709ed70bf8d200d90bfe6f78cf7bc091 SHA-256: 9da055d6ab956043fb87fe78aeda29de978c17e4fff90c3eadd3fa5085dc919a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains keywords related to financial statements, indicating a lure to disguise malicious intent. No scripts were extracted, but the PDF structure and numerous external URLs suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=pro+forma+income+statement+example+excel
    • https://static.s123-cdn-static.com/uploads/4449605/normal_5fe1869d5f99a.pdf
    • https://cdn-cms.f-static.net/uploads/4462368/normal_602e9d77164b2.pdf
    • https://static.s123-cdn-static.com/uploads/4477139/normal_5ffce2c977e18.pdf
    • https://cdn.sqhk.co/mafozerekat/rBijJgi/24263449436.pdf
    • https://cdn.sqhk.co/fedelubu/cwnhewz/fopisuvexivozebawof.pdf
    • https://cdn.sqhk.co/nobixapo/fLAf5hd/rivebare.pdf
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/4496545.pdf
    • https://static.s123-cdn-static.com/uploads/4369525/normal_5fff62f3d6ef1.pdf
    • http://coolvdomaion.online/kenmore_washer_and_dryer_stackable_repair_manualem7v4.pdf
    • https://cdn-cms.f-static.net/uploads/4474231/normal_600c9dde9be84.pdf
    • https://cdn.sqhk.co/fulaxanew/erIheie/paxevawusazilarilujovol.pdf
    • https://vapulorefemefiz.weebly.com/uploads/1/3/5/9/135956910/bc437509.pdf
    • https://static.s123-cdn-static.com/uploads/4494440/normal_5fcd0052cfbc2.pdf
    • http://top-odejda.com/stacey_lloyd_2014_answer_keym60bi.pdf
    • https://cdn-cms.f-static.net/uploads/4478408/normal_602a4299453ea.pdf
    • http://belplitka.ru/gasterra_annual_reportwl8ng.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0e3.bin
80b9abbb638c763b7a41bb5dea9cea4a1d54427c766159ba3dabcce11df79b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 5016 bytes
font_01_sfnt_off0000f1c7.bin
d87a263e7bcf0b1f50b0674e324028266284810b0fe6019f24fbd5f52e8a7969		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 10360 bytes
font_02_sfnt_off00011508.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11508 4324 bytes

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