Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4712e2086ad804b…

MALICIOUS

PDF

177.6 KB Created: 2021-01-08 16:30:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f49f68676dcc70da6a96c366feb61c90 SHA-1: 754c99cecaf825de6e00c8d68a375937909af7e5 SHA-256: e4712e2086ad804bea6b2fbbf3d629f3257efb3a293fc41c0d92add96f555ca9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Slc solid state drive external', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/123?utm_term=slc+solid+state+drive+external PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5fbb4dd46c4cd.pdfIn PDF document text
    • https://cdn.sqhk.co/bidomutarili/hbfoNKj/nojumo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409610/normal_5fbf602e72e4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474470/normal_5fef8bea80343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484814/normal_5ff525cf1eab3.pdfIn PDF document text
    • https://cdn.sqhk.co/dubagelojuwe/UoqrVNc/two_player_games_soccer_physics_2.pdfIn PDF document text
    • https://cdn.sqhk.co/rogumabutur/1TOwge4/mens_hairstyles_longer_sides.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493876/normal_5fefb4fc07ee4.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/93Ijjjf/kepabugup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419832/normal_5fa0d02c6ad2c.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/Ygiie6l/93560239472.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/purixifusipelid/76211061301.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/accountants_certificate_template.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/meratadorigisala.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_off000258e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x258E5 7588 bytes
SHA-256: b2a227eb234823277a7b94f820af582c91327ddc89717de46af60938c63f0499
font_01_sfnt_off00027295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27295 5164 bytes
SHA-256: 1717a597d5f50444c63db02f563875e5f584d631558013b32caf1240ed92a4d0
font_02_sfnt_off0002843b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2843B 15868 bytes
SHA-256: b1e2ccc264bf8a1d1a772287add2abbd79595d91156d12d6a256939b6479d7b5

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