Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d0146456424d91…

MALICIOUS

PDF

139.6 KB Created: 2021-07-19 09:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e662c4c5f453760f89b9f9f61ffb2f1c SHA-1: b80c2df9bf7500cf8dd5cc82249ed5e50b7d3cf9 SHA-256: 61d0146456424d91679c66018f4702c14c110de85fba45b67a11730b679ad019
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The presence of embedded URLs and the PDF structure suggest it is designed to lure users into clicking malicious links, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3349

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/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=pythagorean+triples+with+10
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f4973e6d5e991e36ee1668/1626642238760/embed_video_on_website.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4ff323a33e4096df00185/1626668850466/injunction_without_notice.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1a8491f0d6d1f0ec59570/1626449993346/jezuxekuf.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60effe79ec49181e3c113dc9/1626340985965/76464833969.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_off0001bdcf.bin
d56e76d61ada04b2d401aa744fed90d0e6c45b310265b3731a9696fdd41b67ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BDCF 19288 bytes
font_01_sfnt_off0001f0e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F0E8 16792 bytes
font_02_sfnt_off000208ff.bin
6e260021139432f033f270836b13c09da3117633f3265f1b611fb11ca8b25741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x208FF 10904 bytes

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