Malicious PDF — malware analysis report

Static analysis result for SHA-256 60db1f4db022fd6c…

MALICIOUS

PDF

64.6 KB Created: 2020-11-22 10:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e4be25dd27ece47a74c77ffa13b767a SHA-1: b3946ed1cc68612beb5a938fe0de152b2cd08444 SHA-256: 60db1f4db022fd6c2f26f595a84062f2620b31f455e8202d3f7f3f8bc32fb846
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL, 'https://traffine.ru/123?utm_term=leaving+on+a+jet+plane+chantal+kreviazuk+ukulele+chords', which is likely part of a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the high risk score indicate a malicious intent, likely related to spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=leaving+on+a+jet+plane+chantal+kreviazuk+ukulele+chords
    • https://cdn-cms.f-static.net/uploads/4392869/normal_5fa65efa33435.pdf
    • https://cdn-cms.f-static.net/uploads/4477408/normal_5fa93a9d93daf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/padadutiseni/attestation_d_hbergement_a_imprimer.pdf
    • https://s3.amazonaws.com/ritoma/75538251552.pdf
    • https://s3.amazonaws.com/zetare/15653061852.pdf
    • https://uploads.strikinglycdn.com/files/a19577ac-c269-4dce-a136-ecd8019a8e63/darov.pdf
    • https://s3.amazonaws.com/gezejoputiwinu/dujeruzodemobapula.pdf
    • https://s3.amazonaws.com/mavixu/love_aaj_kal_2020_wiki.pdf
    • https://s3.amazonaws.com/kevava/dexapivuworewupeverere.pdf
    • https://uploads.strikinglycdn.com/files/64c2a465-98c1-4139-8840-baf30527aa76/monkey_anole_care.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_off0000bae2.bin
4d08641e75b97274b901128a5e65c1d1f218a377f5bd3400e217a36365a57994		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE2 5524 bytes
font_01_sfnt_off0000cdba.bin
e654f836a89828b933466f36b81f9017a71587a3e46faa66fb0c092bb1bcc42f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDBA 11804 bytes

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