Malicious PDF — malware analysis report

Static analysis result for SHA-256 621adaa61f81b513…

MALICIOUS

PDF

81.0 KB Created: 2021-01-12 15:46:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 118efa05a265277376b318eb292fb1ec SHA-1: 7284a26829efa43afbe7fefdd8cb2346a2e40210 SHA-256: 621adaa61f81b513508602d2c35173c096ead908cdba35d8674555998a8750f9
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 'https://traffnew.ru/123?utm_term=gerd+diet+cookbook+pdf', which is likely the malicious payload delivery URL. The document body, though heavily obfuscated, suggests a lure related to a 'Gerd diet cookbook pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffnew.ru/123?utm_term=gerd+diet+cookbook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416806/normal_5f9b9cc0c530e.pdfIn PDF document text
    • https://cdn.sqhk.co/vizebika/8s4jbhe/vojiratumewazo.pdfIn PDF document text
    • https://site-1176931.mozfiles.com/files/1176931/foluzizelova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_5fbcd5f02f476.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424378/normal_5fddf7c3f25e9.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/MPUggUB/mercurial_story_platform_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366362/normal_5febc7bce1432.pdfIn PDF document text
    • https://site-1175775.mozfiles.com/files/1175775/nasa_rocket_launch_video_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zonebon/aadhar_card_enrollment_number.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/walmart_ac_recharge.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF386 4648 bytes
SHA-256: 7da30776ba72a7a6679a2c64b5f6df9806c9c5ee8ce4b56f14f18c0c8e4b46c3
font_01_sfnt_off00010372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10372 11268 bytes
SHA-256: 2008a94bbc9d66d1333e17b544f39ed613aacba6cc3bba18a0a91ebde310de00
font_02_sfnt_off0001299b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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