Malicious PDF — malware analysis report

Static analysis result for SHA-256 60679e752c2d810d…

MALICIOUS

PDF

67.9 KB Created: 2020-11-18 16:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4f85bb28cfb155b280503e532a8c7797 SHA-1: 7b9bc8a29f71f5aa3cd569b8d1437ae8dcdffdc8 SHA-256: 60679e752c2d810d4dd85f97e6bdddb667e72b9bf62acda2bf905e9457cfcbc1
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 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/strik?utm_term=fragility+of+goodness In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5f8cbe988756c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5f8758860b40e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f871036b69e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fb026e29a1a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_5f98c202e1699.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/l_atm_to_j.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/82299740349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98a66a55-f051-49a5-9efe-9e3b71c09d68/ang_probinsyano_july_11_2019_full_episode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5eac096-9585-410b-a2a8-328980811d04/66443809214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a7d7a95-4582-4433-8f65-57262073406a/12765214097.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/teaching_reading_approaches.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/namolabitukenosexukofeso.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_off0000cd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7C 5132 bytes
SHA-256: 57eb290ecc221db0c95f2b4f580e8b89d586119c53eda7a66f6067ba2d75453d
font_01_sfnt_off0000df13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF13 10456 bytes
SHA-256: bee9e1c096bcb4fd74946dcd0052ea05bd0672c8ed125eceff874427fc940a69