Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e19337d33adba33…

MALICIOUS

PDF

69.8 KB Created: 2021-01-01 13:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5b077a7bd48e6b3e4650a512f5241577 SHA-1: 9098429a692d74061e0eafdc0a7f9f584ef22f61 SHA-256: 0e19337d33adba3350bb2edb6fe0edb62efaf27df50cee1814af4ce10ecec8a8
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, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL suggests a phishing attempt to lure users to a malicious site.

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://trafffe.ru/strik?utm_term=afterburner+oc+scanner+amd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388815/normal_5fdb56d0187fa.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/XCaS7sQ/monster_shooter_arcade_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475716/normal_5fc5b3d183eb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_5fe802fae3237.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/9ghggC6/xekibet.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/pD5yhga/hangman_game_online_with_hints.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5fb52fe8926a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426263/normal_5fa7c62a189b6.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/hbza6ch/wife_bugsy_siegel_daughters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374978/normal_5fecba2a623ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e777bb-5dda-4d6e-98bf-3ec6073fbde2/81733897126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e7b068-dc56-4b03-9d97-597ed2259795/meruluzuzimerutizo.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_off0000d575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD575 5264 bytes
SHA-256: 3af15e96c06cd8534783526e62ff2c348a8d66c364280c16a497cc4c700bfac1
font_01_sfnt_off0000e747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE747 10360 bytes
SHA-256: c17e2ba8751393c97e61ab8a541d65152a5671aeeea9d7ecb06b6c738622e10c