Malicious PDF — malware analysis report

Static analysis result for SHA-256 5364c323f7da5240…

MALICIOUS

PDF

70.4 KB Created: 2020-12-26 03:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 96dfb15a1b4aa4864f4a88379a90134f SHA-1: 9af30e18becd98ae55a423011b831ebff1ebdce0 SHA-256: 5364c323f7da5240d70dc8ac81feed0b409032e7769753d39ac22e0d12f93034
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/strik?utm_term=ivory+color+skin' is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious, aligning with the ClamAV detection of 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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=ivory+color+skin In PDF document text
    • https://cdn.sqhk.co/rosavuzezig/ihhhhkh/foosball_hockey_pool_table.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/bRhihio/44345746732.pdfIn PDF document text
    • http://makeup2beaIn 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/e572e822-34ea-4258-a604-98ec8484ab33/fender_cd140sce_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78295b4-3b39-4005-9490-4f5a5d960d93/25871681732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68df15d9-c2be-4d94-ba3a-2798efa47fe3/76139339489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a2512a0-55b5-4036-9ff8-8ac1180f4d61/visual_basic.net_database_programming_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff52c2c-694a-43fd-804e-b9f4c4dce02d/nest_thermostat_e_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/blessing_shumba_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4763d735-b486-461f-835b-b682eda388f8/80328628222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b04ee3b-8f75-4e06-a9ff-f46c1ed3d39e/tyler_the_creator_wolf_zip_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/blackberry_os_support_android_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/75039802483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdaa4eba-3d5e-4bf9-9a18-d484920c36c6/87546787740.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_off0000d7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B7 4744 bytes
SHA-256: 3693e44cd9d9f98c96e9c8a510c669d0a871c7bf94542a173b10536eaa505447
font_01_sfnt_off0000e7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FF 11196 bytes
SHA-256: 26a1cba23132bcfa5cf8eb8660d5308be0094af1885955cb6988d7150ce77718