Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33489fadc748560…

MALICIOUS

PDF

68.0 KB Created: 2020-11-19 01:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58150a1c66d629f2682c7dd2be6be3e2 SHA-1: 1d603d4b32016b6ac6511e86606d4206891749a1 SHA-256: e33489fadc7485606ae2c43720359da67e4548c057b32aecf2972d79885c2dad
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'. This URL is likely used to lure victims to a malicious site. The ML classifier also flagged this PDF with high confidence, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=dell+se2717h+review
    • https://cdn-cms.f-static.net/uploads/4464534/normal_5fa3309b8a0c2.pdf
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f8936e644daf.pdf
    • https://taxajadotediru.weebly.com/uploads/1/3/0/8/130873824/5766104.pdf
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5fa06f3d18204.pdf
    • https://cdn-cms.f-static.net/uploads/4415768/normal_5fafda1c29ead.pdf
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5f937dc373b99.pdf
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/punikatifotutigig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6a76987b-87c1-41db-9d0a-3dac1a34d42b/hard_origami_dragon.pdf
    • https://s3.amazonaws.com/tapelu/bal_ganesh_english_movie.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca50.bin
a09992e731ec99c8484adce08e464ebbf6e2c98f030acec257c66b2e9580200a
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA50 4976 bytes
font_01_sfnt_off0000db61.bin
0e3cb0097f6c6570fa2dad6368d8ceef0a0529054b196bc59680432195a95eb3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB61 11424 bytes