Malicious PDF — malware analysis report

Static analysis result for SHA-256 11165423a22cc2d1…

MALICIOUS

PDF

73.6 KB Created: 2021-03-13 15:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a02e0659ab9d3a30041db3bcf74936c9 SHA-1: 169b24b73d1b6640ff6f7eccffea86598ff62684 SHA-256: 11165423a22cc2d160df6e08be68603c650bcdf35f276941bb20ca628873daef
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs and a heuristic indicating a visual download button, suggesting a social engineering lure. The presence of external URIs like https://mezovuduw.ru/award?keyword=odisha+map+hd+pdf+download and http://nibelv.xyz/715824426123neci.pdf indicates the document is likely attempting to redirect the user to download further malicious content.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/award?keyword=odisha+map+hd+pdf+download
    • http://nibelv.xyz/715824426123neci.pdf
    • https://cdn.sqhk.co/zezetemirag/5jgCje7/38891785861.pdf
    • https://cdn.sqhk.co/jerowerar/9Rvie00/key_leadership_skills_for_project_managers.pdf
    • https://cdn.sqhk.co/bebumula/0iggcxK/wezolorijetaguvi.pdf
    • https://cdn-cms.f-static.net/uploads/4496812/normal_602c9f477b08c.pdf
    • http://ooovseanalizi.ru/kobalt_air_compressor_60_gallon_prices7nrj.pdf
    • http://opt05.ru/10000_reasons_song_lyrics_by_matt_redmanw358h.pdf
    • http://belkwigs.com/xirugajudxoyl.pdf
    • https://cdn-cms.f-static.net/uploads/4420765/normal_6024f97510d44.pdf
    • http://se-mrush.com/bouncer_1._5._1_apkntyrw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/legobegutulo/gomami.pdf
    • https://s3.amazonaws.com/perurulexi/xoporan.pdf
    • https://s3.amazonaws.com/xozeb/68629703505.pdf
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_af63440960bd4818b479ebda1ef8dca0.pdf?index=true
    • https://s3.amazonaws.com/tapelu/akcent_thats_my_name_song_mp4.pdf
    • https://s3.amazonaws.com/wolawatin/kobalt_7_wet_saw_manual.pdf
    • https://s3.amazonaws.com/jipowumat/platform_shoes_black_70s.pdf
    • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_3ecd1994132240999a6bd48903b7a7b5.pdf?index=true
    • https://s3.amazonaws.com/gimisorixosu/gumalofojakanor.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_off0000e075.bin
ed187179882fcf981df29340852f5cc5b6f07d8a2346d249fa2fd7e6c11e1ffb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE075 5304 bytes
font_01_sfnt_off0000f26e.bin
564dab7903d80b6be86d232904f30f4d5b7c705c260b90429071978697438fdc
pdf-font-stream PDF embedded font (sfnt) at offset 0xF26E 10832 bytes