Malicious PDF — malware analysis report

Static analysis result for SHA-256 454ebaa732128681…

MALICIOUS

PDF

67.5 KB Created: 2020-12-19 01:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e0faeacd7c7c5e95105ae2f18f25d82 SHA-1: a1dd2c69f60b066be0ac93e78ea755db6360d066 SHA-256: 454ebaa73212868195a4c5f5c74fa580dda7f0bbf15cec7475ab1ca8d031ba13
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL suggests the document's primary purpose is to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=kindle+do1200+manual
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/933197.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/meludav/us_history_staar_test_answers_2019.pdf
    • https://s3.amazonaws.com/najubu/free_printable_calendar_template_december_2018.pdf
    • https://uploads.strikinglycdn.com/files/a422a885-de92-40a9-a086-20730debbf01/67171595696.pdf
    • https://uploads.strikinglycdn.com/files/d2fd89a3-db38-4a4d-ba97-6cd0901585ce/roh_roster_2006.pdf
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fc24f6c3485235c86125518/1606569837429/tim_dunne_places_the_english_schools.pdf
    • https://s3.amazonaws.com/sirasu/disejaxabitenabemunupuv.pdf
    • https://s3.amazonaws.com/fosawef/cardiomegalia_fisiopatologia.pdf
    • https://static1.squarespace.com/static/5fc116c5bdb33045eec368a4/t/5fc1e59ba97599144e3c0e4a/1606542749638/manual_transmission_neutral_safety_switch.pdf
    • https://s3.amazonaws.com/vonuxagupeduze/audi_r8_v10_plus_manual_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/8e7d38c5-60a7-4444-996a-ab973ebaa96d/bioshock_remastered_cheat_engine.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c10e.bin
5205dc029b2d4b0ae44ddd8c96d056e1801b9f6b3c115db4e44038fa36e83b83
pdf-font-stream PDF embedded font (sfnt) at offset 0xC10E 2940 bytes
font_01_sfnt_off0000cb9a.bin
825b837fe62e9f9ecc81272a66dfdb801855260b135d6035bdf565d3fe329345
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9A 4992 bytes
font_02_sfnt_off0000dc8b.bin
3e7faf5ee868d49849fce85923972550a5fdc3c7059540fa62dceb0f71f28004
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8B 10784 bytes