Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a689fc3b8189b73…

MALICIOUS

PDF

70.2 KB Created: 2021-02-16 20:06:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 07003bd4d798a6c68dffd0c2e4848994 SHA-1: b6b1353e7cc2b6f175dc544b4c2a0958bb20fd26 SHA-256: 7a689fc3b8189b7353f771353c9ed60adfaae9ae62294ff846c2bcec8846499e
104 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The embedded URL and document content suggest an attempt to trick users into believing it is a legitimate Western Union form, likely to facilitate the download of further malicious content. No scripts were extracted, but the PDF structure and external URL are strong indicators of malicious intent.

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=western+union+send+money+form+pdf+usa+sample PDF link annotation
    • https://cdn.sqhk.co/wazotifuk/39lLsid/3435126641.pdfIn PDF document text
    • https://cdn.sqhk.co/dakubakasilu/hb5idQ5/96429325737.pdfIn PDF document text
    • http://tosasex.22web.org/16339976017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5fd0de1549c97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxefav.epizy.com/faruledurovixepiger.pdfIn PDF document text
    • http://zopumukujo.epizy.com/15302733129.pdfIn PDF document text
    • http://ninonasoligu.rf.gd/78061636192.pdfIn PDF document text
    • http://witolav.epizy.com/vatizamitebupidotub.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/vazaremezotugagisebobuwum.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/charmed_season_1_episode_14.pdfIn PDF document text
    • http://runoxujozu.rf.gd/92584863516.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/fannie_mae_guidelines_gift_donor.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/numifix.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/la_nationalisation_du_canal_de_suez.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/wallpaper_god_of_war.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_off0000d5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E0 5300 bytes
SHA-256: a54fb7664bb91e33edbb8d2215e699a627a75ee195753a10d22385bff0bd0b94
font_01_sfnt_off0000e7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E4 10548 bytes
SHA-256: b27fdf9a33b07e3cb85c09bdae304e0a2e47d90a8d7dd5d2b8abb9bf0b8272e0

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