Malicious PDF — malware analysis report

Static analysis result for SHA-256 70da8a4cc34b2bb4…

MALICIOUS

PDF

76.3 KB Created: 2020-11-30 03:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c1e8ad6950c5d5e4fed35edf4208712d SHA-1: dd1f2398af500de3f8ebd5ae67bb76213a43b5de SHA-256: 70da8a4cc34b2bb4103221be585be37f44512bad1b3f020a1c0f9d482a522856
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffset.ru/strik?utm_term=commercial+vacuum+sealer+repair PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f93c290c72f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484636/normal_5fc3cf67bef83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413240/normal_5f9e76b9571a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416932/normal_5f9dde6053926.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410678/normal_5fa0bf10b89f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_5f9016bf466f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_5fbf31f3a7972.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vinejivunitego/synonym_for_setting_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/9064528695.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/465951386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cbf1d27-ca3c-4075-b0cc-df35a48535e7/vijimeburenalumawoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a36a15-47bf-4553-9e36-3f3b34b8afce/giwajigujitovepebekajevuf.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/tavek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10A 4856 bytes
SHA-256: 003fc1e89bc1c4c57eb235a4152165652cb51da7a47dfd40624380cb238be8c2
font_01_sfnt_off0000f18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18B 10700 bytes
SHA-256: 70c4f19c255f4e5c3b7dcf1b918ec14fe87e978f1f50e62f4aa55ab386d4d258
font_02_sfnt_off000115b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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