Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf96f398bf9fa9d…

MALICIOUS

PDF

75.1 KB Created: 2021-02-19 08:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e9eed3e587d192fc717c14ed32c8e3f4 SHA-1: c72a9335159bbf0aedfa83642caa86305e9fe681 SHA-256: acf96f398bf9fa9dc105772181f848217a8dce202683efdb340099d829455a63
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a potential malware download. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The primary IOC is the external URI pointing to a suspicious domain, likely used to deliver a malicious payload.

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://jottigo.ru/wix?keyword=easycap+apk+cracked PDF link annotation
    • https://cdn.sqhk.co/zexetiminav/jgdaXJV/arctic_fox_phone_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452862/normal_60072892f0768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408997/normal_60116e092aeef.pdfIn PDF document text
    • http://espaceabonne.com/zubazakehddfl.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jX6ijzw/colony_leader_halo_wars_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504922/normal_5fd63745e1e9a.pdfIn PDF document text
    • https://cdn.sqhk.co/xizubutagen/gfvUqjc/screen_recorder_free_no_watermark_no_time_limit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5fe2457bd168e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448720/normal_5ff819132890a.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/ighbgcA/warzone_2100_download_deutsch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444657/normal_601081ed1890e.pdfIn PDF document text
    • http://pumba.fun/download_slumdog_millionaire_sub_indoxinjh.pdfIn PDF document text
    • http://bit7.top/toro_recycler_22_190cc_troubleshootinghxm9h.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/JgiNaja/3531914761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vubixijugisoloz.epizy.com/fatakubidozezoni.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_off0000e213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE213 5160 bytes
SHA-256: 4f0c0db79dab0ea7f7849a1a6952eeb0ba2c32c8ef298e02758b1cff4ad63527
font_01_sfnt_off0000f3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BF 13868 bytes
SHA-256: 5c9f12125b5dff4dd0be907c290672afd9b77f251aa49bc44f382a6b4fdaa83c