Malicious PDF — malware analysis report

Static analysis result for SHA-256 768ae718b98d738b…

MALICIOUS

PDF

79.3 KB Created: 2021-07-14 03:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 48629730a654c1dc0febbcab9487c2a8 SHA-1: b1c3e16fe213039c88341569b46ad42278140262 SHA-256: 768ae718b98d738b554761c08b31358c8cfac6cc57d9a077574abb19ce96663c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains embedded URLs, suggesting an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection point towards a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8374

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/XMoLd4EPXkg/square?utm_term=largest+eagle+wingspan
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7d4ea4aaab0286a8a6459/1625806058933/the_oath_of_the_vayuputras_read_online.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9330f8ce0e10532d343e3/1625895696089/nogoramutuxa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e847135011eb36d5d6f68f/1625835283919/how_to_plant_seeds_in_minecraft_education_edition.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee2f4bb27e5958d58e2833/1626222411512/48_hours_mystery_tonight.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c34b352a35235f1d0e3d/1625867083803/how_to_skyblock_hypixel.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_off0000d6b6.bin
dcfcbcd52b29f4d941b0ac444861ae635d98d9c9dbaecf603f1dcf31395c8ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B6 10352 bytes
font_01_sfnt_off0000ee38.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE38 16792 bytes
font_02_sfnt_off0001064a.bin
96bc6bcd82af6451c11d325ec02e60507ae152cee047dfea2524d36945bc9fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1064A 16684 bytes

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