Malicious PDF — malware analysis report

Static analysis result for SHA-256 d208e94d5cf16b67…

MALICIOUS

PDF

70.4 KB Created: 2020-12-20 23:31:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 767da71ed63fc6481aaa8530773c35ae SHA-1: ee8904568cc47085275e76ba587c9311e14a8901 SHA-256: d208e94d5cf16b679a1246d7f977a767450976a29ed419484e4318df29870721
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain text related to the URL, suggesting a lure to trick users into visiting the malicious link.

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://traffine.ru/strik?utm_term=funny+horse+farm+names
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5fbc5ee575536.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d454224b-92cd-4e92-9529-95810fc5d8ca/netim.pdf
    • https://uploads.strikinglycdn.com/files/c48bf812-f85c-4f50-bf56-527f88c30e17/restrictive_and_nonrestrictive_relative_clauses_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/63dd0953-3490-4e98-8ed6-6255ba349128/10442205323.pdf
    • https://uploads.strikinglycdn.com/files/e997bfb6-b120-43ff-9313-154697e6cea4/11576365554.pdf
    • https://static1.squarespace.com/static/5fc1576327a199023ab86c6c/t/5fc392f83c02f22b9d7b28a4/1606652664229/mabafet.pdf
    • https://uploads.strikinglycdn.com/files/65b7390e-c85e-4fac-951d-f5b42a723c4c/la_boheme_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/6a11c3bb-1906-4ad8-9889-9a657ee5e9ee/24594639939.pdf
    • https://s3.amazonaws.com/mijedusovineti/majix.pdf
    • https://s3.amazonaws.com/guwutivupudutu/lege_btw_aangifte_en.pdf
    • https://uploads.strikinglycdn.com/files/caaf5845-e77e-423a-8481-9a3b2ae7444f/4786654652.pdf
    • https://uploads.strikinglycdn.com/files/28a0080c-670c-4672-a250-882d028d4a0e/46761961320.pdf
    • https://uploads.strikinglycdn.com/files/b281f849-36ab-4a00-b3e1-139a1c15e974/68875559107.pdf
    • https://uploads.strikinglycdn.com/files/9e1b5296-4cf2-49c0-94a1-147eaafba470/swallowtail_jig_sheet_music_flute.pdf
    • https://uploads.strikinglycdn.com/files/acce3827-185b-4822-8423-15604d12e930/47058637705.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_off0000d7b5.bin
2c0a688b6d45dcd8e95bb10f4cf80fe26bd86ca128b2f6452768188b18d30d18
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B5 5032 bytes
font_01_sfnt_off0000e8b1.bin
2098277a252c59e30fd115de617f372d2e5501d01b667cd4b58e88d9fa1bf117
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B1 10532 bytes