Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8af4830d7a7db8e…

MALICIOUS

PDF

73.6 KB Created: 2021-07-16 15:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5f50f67ddf72a47f047c6cbd80d6bcac SHA-1: 42c500a35ca07b9d0ae81403cd4cb680e068da21 SHA-256: a8af4830d7a7db8e1d02cd2cebf7b77e48eae2dc3da662a78ebf7228d2f4b9d3
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The embedded URL points to a website that appears to be a phishing lure, disguised as a sales compensation agreement template. No scripts were extracted, but the PDF structure and embedded URL strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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://huntic.ru/square?utm_term=sales+compensation+agreement+template
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec848a4c0b954f9ea42f39/1626113162599/claires_mom_on_modern_family.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7e32dbab062161338c391/1625809709251/sample_solicitation_letter_for_donations_tagalog.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_off0000c2c9.bin
034ac624800cb8b118ab70c4910415cdfa9272367bb94abb59e4bcb2d31e6e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C9 10792 bytes
font_01_sfnt_off0000db99.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB99 16792 bytes
font_02_sfnt_off0000f3ab.bin
ca421be516f6dc794528b39306179ce31f6423d45b7a535b331654c02da9879b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 15356 bytes

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