Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebafc6f971e34e4a…

MALICIOUS

PDF

74.1 KB Created: 2021-01-03 23:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3336038856ab62485862b3c952fb2b28 SHA-1: 8d45806de6b6ed132f6b7666475bef605d318bf9 SHA-256: ebafc6f971e34e4a09976874e1eff384a4c65dfaf0cd8b4514a12612066fa4f4
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=codelab+answers+java PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467564/normal_5fd9f5b097ed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404297/normal_5fd3cbc3b9108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5f887f40ab493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_5fc2f396b352f.pdfIn PDF document text
    • https://cdn.sqhk.co/nudotunaza/xhhihje/fenevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460966/normal_5fa5f5e768ce8.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/mejifavo/anandam_movie_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/hmrc_starter_checklist_word_format.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/brave_browser_github_android.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/40061104803.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_off0000e5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CC 5092 bytes
SHA-256: 5c078ac23695a7ed832f04fddcdfb00644dcb5aac287f4efd66822d0d92335d8
font_01_sfnt_off0000f738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF738 10784 bytes
SHA-256: 4b956318a2d7910e60a458640657c85ff8f499692f4d871fce3a662686d5ff3d

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