Malicious PDF — malware analysis report

Static analysis result for SHA-256 68bdc1e56751ffb0…

MALICIOUS

PDF

101.8 KB Created: 2021-07-14 03:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f4497db300fa188cb6dac829bf86a671 SHA-1: 06bffe2da34a946135bbe5187e24fcf8efa19422 SHA-256: 68bdc1e56751ffb09c42bf5d3955956c026700a05d5889a592a6f84758861971
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that, while currently flagged as benign, is indicative of a phishing or credential harvesting attempt. The PDF structure and embedded content suggest an attempt to exploit user trust by presenting a seemingly innocuous document that redirects to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5877

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/ZV5PD9BTPXI/square?utm_term=sins+listed+in+the+bible
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8df9af107ff2467e59138/1625874331062/40193808258.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e91e80fc46b1505827feec/1625890432105/find_distance_on_velocity_time_graph.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee232c39b8260338683dcc/1626219308517/81247204937.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_off00012f8f.bin
8a32aa892dfb868624c3d696cd7c697eded51e5e5014e1272a46a3eaa9628256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8F 10180 bytes
font_01_sfnt_off00014630.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14630 16792 bytes
font_02_sfnt_off00015e42.bin
3f76c00bbc098aab376397e250a8e15cb09aead5ded3b8e7c551f406eb768b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E42 17080 bytes

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