Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9692185aa9c39b…

MALICIOUS

PDF

66.0 KB Created: 2020-12-16 22:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 18f73014ba54a0af14ad69c1ae81fe08 SHA-1: bc5015a25517f806321312db3d9bbc1e77d91cb9 SHA-256: 6d9692185aa9c39bd6e2173d5a3ddf5c0eba3d9a391b51820f01660c7e99e83e
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. An external URI pointing to 'trafficel.ru' was extracted, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of a malicious document.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=critter+spray+gun+home+depot PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f871c162852a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406785/normal_5fa9ec50013a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5f9ba9295b2b6.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/niporofez/sokawedebavuwokef.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eca2be9b6939510ae43f/t/5fcd41872fa8bc6bcdf67f67/1607287175630/roller_ball_lip_gloss.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcefb9c9697205d6f6695af/t/5fd183b47c12252903ec0952/1607566261275/onedrive_for_business_shared_folder_sync.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/12281320091.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fcea560c463130800a31f60/1607378272632/daxoduwivukukixefemovin.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunoje/obliged_synonyms_and_antonyms.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/lulejejupixapadeduwe.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/zotulidef.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_off0000c3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F6 5348 bytes
SHA-256: 05471f0874ac75425f5463f305a2128e58c517365f76589d495c4ff84e424d92
font_01_sfnt_off0000d5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FE 11100 bytes
SHA-256: 6b01a81e3784925392c4eeb17b83afc5f8365be15faf6d2d17cada8b887e0f15