Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14a98fa0ad0c5fa…

MALICIOUS

PDF

79.4 KB Created: 2021-07-13 16:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a10666324691dd589d4f9307d31c7e39 SHA-1: 0fe218659490bb5dd17d164318b7ffe75e40e4df SHA-256: d14a98fa0ad0c5fa9bc50ba7a41ed0fedae0eac417be7941855c3e01a632ea2f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing lures. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9478

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://laborke.ru/square?utm_term=compulsory+education+in+france
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec80bc700aa07a7894b023/1626112189004/20837141081.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed5044eaa19e084bbf28a7/1626165316982/code_reading_the_open_source_perspective.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7af744d2175279d1122e6/1625796469014/48853432397.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb57ce70f5f3535de4865/1626125693032/33133561071.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e881ee455dce08fe7d3f50/1625850350995/the_legend_of_ron.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecc632d064723393d83571/1626129971024/92730468538.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecf19f39532c3941ba9cfd/1626141087280/86671163646.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e80364a3609a707badc2e7/1625817956414/vewipuba.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_off0000d489.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD489 16792 bytes
font_01_sfnt_off0000ec9b.bin
36c5a810b6d71f4fc712d746ecc4bfcc5abe6fd2320bab3a27578b814e745be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9B 16868 bytes
font_02_sfnt_off0001180e.bin
de44ebbff38ca9241f544e9212e42e5c7f16a1794dc137ba5cdd73fef0ed9e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1180E 11024 bytes

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