Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0beef72e5dc67ef…

MALICIOUS

PDF

137.9 KB Created: 2021-07-13 17:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3eaaf9844c6a0650b0a8ed42a7ff3c00 SHA-1: f65f5b2d6b91af8ad33c2d23174469d26352f1c2 SHA-256: a0beef72e5dc67efbbe4a029cf5e9c636e1052fdff5777861d816392de4f3dab
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. The embedded URL, while marked as benign, is presented in a context that suggests a social engineering lure related to shipment delays. The document body is heavily obfuscated and unreadable, preventing further analysis of its specific content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3349

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/sq/ugae/~3/IdU8rIDf9lQ/square?utm_term=ecg+cases+with+answers+pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec83ad8bb04542cee49230/1626112942055/xitefimadirazobop.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecee499db072196a1bb563/1626140233222/paladinoxadixawu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec735d5978cb5ccaa92f34/1626108765895/effective_public_relations_and_media_strategy.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7928d4aaab0286a8691cb/1625789069216/shipment_delayed_in_transit.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_off0001bb97.bin
b677010332dab9942b4dae36d65a9e918764fd33ecf5a63ae16715c3ee34d3b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB97 17752 bytes
font_01_sfnt_off0001eaab.bin
592979bde4eb31c08411243a0f96dce9c0361fcd581082518bb0502a141082c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAAB 10800 bytes
font_02_sfnt_off00020362.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20362 16792 bytes

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