Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29a293e9a0b7f70…

MALICIOUS

PDF

76.0 KB Created: 2021-01-23 02:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b1c562986e6d10eda0b05c4822891691 SHA-1: deeeab4aa893d84b2453807b7d2fee481fcd4d4e SHA-256: e29a293e9a0b7f70130641e6d07badfcbcc1a890e2445e1564fb8008afa426ec
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI heuristic identified a suspicious URL, https://seumenha.ru/123?utm_term=caddx+dolphin+sd+card, which is likely used to host a phishing page or distribute further malware. No scripts were extracted, but the PDF structure and heuristics suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/123?utm_term=caddx+dolphin+sd+card PDF link annotation
    • https://site-1176360.mozfiles.com/files/1176360/14000724292.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416504/normal_5fce0e6a69a59.pdfIn PDF document text
    • https://site-1175238.mozfiles.com/files/1175238/21440124089.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371497/normal_5fe1c67d425e8.pdfIn PDF document text
    • https://site-1180194.mozfiles.com/files/1180194/zogizetujujitor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxiwig.epizy.com/informacion_plusvalia_municipal_ayuntamiento_de_madrid.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/bojezixikativumawa.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/zufosobelomujofobif.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/3762903707.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/binder_paper.pdfIn PDF document text
    • http://xitirinajeki.epizy.com/simple_house_plans_4_bedrooms.pdfIn PDF document text
    • http://xajumin.epizy.com/call_report_ffiec_031_and_041.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/alone_heart_sheet_music_piano.pdfIn PDF document text
    • http://mujopoweter.rf.gd/axway_api_platform.pdfIn PDF document text
    • http://jijetebum.epizy.com/nekasomodoweme.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/circular_polarizer_filter_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/nowiwewifilefumizuz.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_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 5136 bytes
SHA-256: 779eac1df7a013c3a560628b7c7ba4afc127bd57f53bb1b9baa9618682118400
font_01_sfnt_off0000fa2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2D 12132 bytes
SHA-256: c7ed659f3b2fd059f373efbe3b17a790b835dff325177f9a2c2ac48f26dc349c

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