Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fac671b4e63c2b…

MALICIOUS

PDF

78.1 KB Created: 2021-07-19 23:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6828982688f3a50cdc8c583ba6f3d9c3 SHA-1: 5817a4c2dca87cc7a11d3b0fbcaf9e8821aa701c SHA-256: a6fac671b4e63c2bf2e47c9b2ce416bcb54b339ff8cde189b66e829974656542
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, one of which is flagged as potentially malicious, suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect the user to a harmful site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5898

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/RVI1sXQGPkU/square?utm_term=citing+chapter+in+book+apa+7th+edition
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e79177d56f0f36126cd8c3/1625788791395/ledosixomowune.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e78950d56f0f36126c5211/1625786704328/world_of_tanks_blitz_unlimited_gold.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f465ba29712869f0720e2b/1626629562947/suzujavivesutima.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee69db7426fb5109f76d73/1626237404055/i_hate_you_meaning_in_telugu.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_off0000ccab.bin
d0b70c88363870537236db11aefc8058700836bb81e8af8579d1c8cc4008dc78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAB 10892 bytes
font_01_sfnt_off0000e574.bin
b7c0223082833a7488a5c930aa0607de2ca594e7423d8729321e6205a0264dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE574 17368 bytes
font_02_sfnt_off000112ea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112EA 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.