Malicious PDF — malware analysis report

Static analysis result for SHA-256 98979dcc3f30d26f…

MALICIOUS

PDF

78.2 KB Created: 2021-02-08 06:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 780ef9421cd4d765fbc66d01308ae8dc SHA-1: ba41feebf6a1cfacda1e455a618937d2fc78c08e SHA-256: 98979dcc3f30d26f26cbaa251b471c2f9ae34a4cf0826ffd6b1029ca2273acb4
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that redirects to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a film title, aligning with phishing or malware distribution tactics. The presence of external URI firings and numerous suspicious URLs indicates an attempt to direct the user to a malicious resource.

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://jottigo.ru/aws?utm_term=film+3+alif+lam+mim+720p PDF link annotation
    • http://bupro.asia/true_level_rick_and_morty9c02r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_5ff3bcbbf4167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_600acc0be759c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420030/normal_5ff38c9ab4668.pdfIn PDF document text
    • http://zuferiwabofeg.22web.org/gibelunajusijatowuxogeri.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472764/normal_5fe12a787f114.pdfIn PDF document text
    • http://copyright-help-report.com/world_war_strategy_games_for_android0jkp7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376372/normal_5fc7e6d282c5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418796/normal_5fea372b01b35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_600fac6a9cb71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_6020bbae382f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419818/normal_5fc713e26954f.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/wenobagupexekap/68333132881.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/boost_confidence.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/73536495314.pdfIn PDF document text
    • http://tumofif.rf.gd/29222999401.pdfIn PDF document text
    • http://kagiweluxipo.epizy.com/jafinotitatizuramixem.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD958 5244 bytes
SHA-256: c42b7ac86e81f57f1abf423cd2e797e324b5676ff9051307980d253a07c46a53
font_01_sfnt_off0000eb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB35 10792 bytes
SHA-256: 8ca30d324ce08742f7491298e6575eb9fdf6acf15ebc68101c5b93ce28c1fa80
font_02_sfnt_off0001103b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103B 17312 bytes
SHA-256: e9b3a54be32fb318bfdae1b51287fcacb9479acc7b2f42f9972a1ef41f353a42

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