Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe0c58904e3d9ee…

MALICIOUS

PDF

74.6 KB Created: 2021-07-13 20:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f099e6bf297d8e10953cf09c5b431f79 SHA-1: 3fe1d0cc90d092941493882f7c3da32d9f41048a SHA-256: ebe0c58904e3d9ee676eb83db240af63e70695afc6af6dfa4f240e0715aaf3b5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. While no scripts were extracted, the presence of embedded URLs suggests an attempt to lure the user to malicious sites or download further payloads. The document body is heavily corrupted, preventing analysis of its specific content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/0YvHz_IItD0/square?utm_term=coming+to+america+2+cameos
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e922a9854c1d3b34870434/1625891497866/21560290267.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7ff5be8ef4d41b4fc3438/1625816923496/61203527370.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7ef0169e16759cf76859e/1625812737436/35217336071.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec793fdcef4a49b3a9ccbc/1626110271722/pimple_popping_cystic_acne.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed923afb5306426ed0e33c/1626182203247/why_student_athletes_should_be_paid_essay.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8d97651b7076defb516b/1626115479910/the_great_gatsby_chapter_7_9_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edb4ebd2d00a35b8d279c3/1626191083824/11543887603.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3ac.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AC 16792 bytes
font_01_sfnt_off0000dbbe.bin
51d861cb666f395109af946f92391b9c5d82f7c62fb8ccfe7b7d6fc541b58065		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBE 16500 bytes
font_02_sfnt_off00010640.bin
3db59d552aa834e346df142afad15fd5652faf2a3fd22843959d1126e843291e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10640 10676 bytes

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