Malicious PDF — malware analysis report

Static analysis result for SHA-256 3346e655caafe586…

MALICIOUS

PDF

70.3 KB Created: 2021-03-13 17:02:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 38500d0b0bdef7ff29a6c8bcef36c873 SHA-1: 56e833c636d4e52436d0b5a2c8e550b7e3953e1f SHA-256: 3346e655caafe586aed67410b985b0f9f07f831b8d71905c9be4d57e833393bc
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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://soxebez.ru/wix?keyword=fraction+attraction+answer+key PDF link annotation
    • https://cdn.sqhk.co/fewibefanid/b2Tjgha/kifukawenosijabotinaputi.pdfIn PDF document text
    • https://cdn.sqhk.co/domonuxasi/ihhhijj/do_myna_birds_attack_humans.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/TwhbjjF/87922704304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379614/normal_601a789f646e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470683/normal_5ffc874de2dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385437/normal_5fe963e81c0cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_6021d8d033008.pdfIn PDF document text
    • https://cdn.sqhk.co/mupijuwo/ZA8icgh/diwopivabonip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_600ab495b6b6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/holt_mcdougal_sociology_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/bubbles_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/whatsapp_mac_free_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/chameleon_run_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/bromley_high_school_sixth_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/fukujizivegigalowu.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/requiem_for_blue_jeans_bastille.pdfIn PDF document text
    • http://pajamubo.rf.gd/sowemepuwijabiwotosewila.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/dusijunonawaburiji.pdfIn PDF document text
    • http://wigomevunafufo.epizy.com/epson_wf-3640_error_message_0x97.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/3d_text_effect_psd_free.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_off0000d695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD695 4972 bytes
SHA-256: aea0267febb8e8ba7d0cf2e9e572e1c712b29782d9f6f0d376bbdd1a9ffaf303
font_01_sfnt_off0000e7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 10460 bytes
SHA-256: 4817b19c141d111e6ffe190cff963929977ca2abc8a69be6633d1f038c0826d9

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