Malicious PDF — malware analysis report

Static analysis result for SHA-256 826a874c18541ffa…

MALICIOUS

PDF

73.9 KB Created: 2021-01-08 17:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4913ce2a770d7b3154d66dac40ff860f SHA-1: be60d17f905782ab57c7bf7660db8f93d15395d5 SHA-256: 826a874c18541ffa1820f62ee67b1a3927fee41ad2585894fee6f8763b08455c
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to business communication, likely to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/aws?utm_term=template+follow+up+email+after+meeting
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5fd26ecf94eeb.pdf
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5fdf9fe5972e3.pdf
    • https://cdn.sqhk.co/doxowite/juZ5hax/clash_of_clans_download_mac.pdf
    • https://cdn.sqhk.co/badaxiloru/igiihc7/tizufawenano.pdf
    • https://cdn.sqhk.co/xezojutatow/hdsgghg/49136211139.pdf
    • https://cdn-cms.f-static.net/uploads/4463306/normal_5fa50320c7966.pdf
    • https://cdn.sqhk.co/navififoro/ghggnGK/gasezageteporitiros.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nopomewegobij/chocobodi_official_video.pdf
    • https://s3.amazonaws.com/degerutisig/53481630817.pdf
    • https://s3.amazonaws.com/vebisop/definicion_de_historia_clinica_psicologica.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/34293891760.pdf
    • https://s3.amazonaws.com/gogonof/ishares_msci_eafe_etf_fact_sheet.pdf
    • https://s3.amazonaws.com/wizedumi/rirunid.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f6.bin
f27c2e3607c8d01f74caed923dfca5ec5791388e6ecfd3fc63e03164cb56b21b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5084 bytes
font_01_sfnt_off0000f642.bin
285acf6d367ee9465cfffdc0f738bbcaea86256b603f720a659cb1f0ecfaaeb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF642 10744 bytes

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