Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf11089a6db1bfe…

MALICIOUS

PDF

74.7 KB Created: 2020-12-26 11:37:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d58c0da1525bc72de80ab94f8f0dfc19 SHA-1: 727dd7ef02bebe9dfb2b07c0144ad6fe5a410faa SHA-256: 7bf11089a6db1bfe6d66f47b15e7b126ce618fe963d6f483e46f6afcbafb5c78
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=star+wars+clone+wars+2003+anakin'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=star+wars+clone+wars+2003+anakin In PDF document text
    • https://dumiwexadanona.weebly.com/uploads/1/3/4/5/134522913/pidigaromanitusava.pdfIn PDF document text
    • https://vugiwaxe.weebly.com/uploads/1/3/4/7/134739196/belatovizex.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/BigpBif/dicedom_merge_puzzle_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/hev2jgb/stick_fight_war_stickman_battle_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/a5hghao/telegram_messenger_app_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/dasupejej/fGifiyq/21350127748.pdfIn PDF document text
    • https://nafuxiba.weebly.com/uploads/1/3/4/0/134097784/musubodefotunawido.pdfIn PDF document text
    • https://keromarire.weebly.com/uploads/1/3/0/8/130873863/2a98b70492a5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae7e6fc-4e99-4b64-8fc5-dd5c5375cedf/physical_landscape_of_italy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac7509c-e34c-4eb8-93bb-d4746e7f542e/dragon_ball_z_xenoverse_2_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/209083789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12ad353-19f6-4b2a-86e2-8361e9330c20/17485127102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd22ea8-50a5-4438-8d7c-59c7378cec6a/98213919854.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_off0000dc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC33 5492 bytes
SHA-256: f2ade25452592e1f9aa5a7655f9384f0ab768e9de2e52da55704c7b0b8689752
font_01_sfnt_off0000eefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFC 14872 bytes
SHA-256: a93bc3940a4e50ac9c28dc25859fb612522fb1474e48e661f2c841fca795531a

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