Malicious PDF — malware analysis report

Static analysis result for SHA-256 050d44d4e118debe…

MALICIOUS

PDF

77.2 KB Created: 2021-02-27 01:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9a38ec95e27a026bdd2a4d4759662fbd SHA-1: 464121c3bfe039ca6f52d8d3333ce37a579fa5dc SHA-256: 050d44d4e118debed85e659200ec11b077e7a199c417d25075c80c7e0a6cc7c0
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 URI pointing to a suspicious domain, 'bologen.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, suggests a lure related to books, aligning with a phishing or scam attack pattern.

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://bologen.ru/123?utm_term=halo+books+worth+reading PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474980/normal_6010323f9bb57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_602c4d43610ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_601f40c4cc68e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5fcedcd017202.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/ujii1ja/59989446306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448113/normal_5fe7de2e698b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc847ab1e7c7.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/jdKhdjh/sup_game_box_plus_400_in_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493569/normal_603973b5b4574.pdfIn PDF document text
    • https://cdn.sqhk.co/wesebewoweva/nLIgji1/bucket_list_travel_ideas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453337/normal_5fe2a7efb4f29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5fe9d6148f07e.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hbiejaa/42336047070.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/hfqihlL/samsung_galaxy_s3_cloud_backup.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/SeggUje/birthday_cake_images_manisha.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5fe7d90f50ccd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumigetutiburu.epizy.com/the_hunger_games_catching_fire_movie_summary.pdfIn PDF document text
    • http://tujatubaniza.epizy.com/bsplayer_apk_android_4._4.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_off0000f10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10D 5344 bytes
SHA-256: 7bf8f4355f42db0b3345138ad8d924574f881b1e87f3751cc297e07608e1469e
font_01_sfnt_off0001033f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 10580 bytes
SHA-256: 7b434c86981699980915309c4acedb80d84630ccd772020374b9cf59843d3735

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