Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a73340387f7d85…

MALICIOUS

PDF

74.1 KB Created: 2021-07-15 11:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 795229d250cb2e765e08b8eb7791e4ae SHA-1: c7952fa0f42ef80bb899b0ca90418c5cc74af889 SHA-256: 60a73340387f7d858381ac6462920fa5add2dadb497ad4491bf7cfc58d2497da
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as a phishing trojan, indicating malicious intent. It contains embedded URLs, one of which points to a resource that could be used for phishing or malware distribution. Although the document body is heavily obfuscated, the presence of external URIs and the ClamAV signature suggest an attempt to lure the user into a malicious context.

Machine Learning

  • Nyx PDF Classifier clean score 0.2401

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://feedproxy.google.com/~r/sq/ugae/~3/WVKuihPcy9U/square?utm_term=shiloh+dynasty+sing+to+you
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7f250d838b6c850c68f0/1626111782111/the_lord_of_the_rings_free.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee83c19b1e4d6a36111801/1626244033815/red_blood_cells_white_blood_cells.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_off0000bef1.bin
10efe03e058d9c31ea15f5e87ee868eb2c955b836b0fe7d5a49c881ba9a1566e
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF1 17392 bytes
font_01_sfnt_off0000eb91.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB91 16792 bytes
font_02_sfnt_off000103a8.bin
0db16cde9fa847071f176d097cc070cce7d41fde5a3d2765fa0851238db46ac9
pdf-font-stream PDF embedded font (sfnt) at offset 0x103A8 10584 bytes