Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a426c74a440b869…

MALICIOUS

PDF

77.9 KB Created: 2021-03-17 23:46:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6083d39a039ec6ea4670bf94df78c0d9 SHA-1: ddde02addb268cccd61585b6099dccef45822de1 SHA-256: 7a426c74a440b8693e80b2207020755ac64b8a5f423357fffcf70d4108eb6667
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 pointing to a malicious domain. Heuristics indicate the presence of external URIs and a ML classifier flagged it as malicious. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be related to the URL's keyword, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=winx+club+boyfriend+scenarios
    • https://cdn-cms.f-static.net/uploads/4475737/normal_60121739147db.pdf
    • http://bitcoinlearningcentre.online/69947383809fqhsm.pdf
    • https://cdn-cms.f-static.net/uploads/4383807/normal_603c23b37e5f5.pdf
    • https://cdn-cms.f-static.net/uploads/4497358/normal_604101d75003c.pdf
    • https://cdn.sqhk.co/muluxodipoto/Ojdjiie/31272296918.pdf
    • https://cdn.sqhk.co/jigugabopu/jbhfwhe/8478026478.pdf
    • http://pufuwobexoz.iblogger.org/72673733503.pdf
    • https://static.s123-cdn-static.com/uploads/4417527/normal_5ff7d7ce486f6.pdf
    • https://cdn.sqhk.co/bosareke/lujhJ44/vodapinipowuvujoruridag.pdf
    • https://cdn.sqhk.co/xekowodu/jg969ie/podazapavi.pdf
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5fceb365ad3c9.pdf
    • http://dalnoboyi.xyz/meserozozupokazoxacke30.pdf
    • https://cdn.sqhk.co/zupololano/Q3jdkmf/acrylic_nails_at_home_easy.pdf
    • https://cdn.sqhk.co/xumesapaxoku/JSihjgN/dozesevajofube.pdf
    • http://remontvorot24.com/astrology_answers_twin_flames7oem6.pdf
    • http://todayshop.website/57665782901ig2i4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dogosiroluv.rf.gd/automatic_door_bell_with_object_detection.pdf
    • https://s3.amazonaws.com/makumapikeze/jumofowuzoziligizevaduj.pdf
    • https://s3.amazonaws.com/defujo/classical_guitar_lessons_seattle.pdf
    • https://s3.amazonaws.com/kiremefegonar/71724607936.pdf
    • https://s3.amazonaws.com/zuwimadaneb/3988832636.pdf
    • http://bikutuvuxaxixo.epizy.com/how_to_save_paint_3d_as_jpeg.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_off0000eed6.bin
389bcbfa91b1d62818a5d7af3f797d1e6e59c8ee44eff6bb74ad47ea3378901d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEED6 5340 bytes
font_01_sfnt_off00010126.bin
6fa743f092b50e4f1b659eede1162ebafac00a11a790b7d1fa1fb0cf42ee63c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x10126 12580 bytes