Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6ef23ab408f44e…

MALICIOUS

PDF

77.3 KB Created: 2021-07-15 13:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8079762272f794254ca3b83749776cdb SHA-1: 95808e3df19e6614e38c3eba2b50d5578211946e SHA-256: fa6ef23ab408f44e793494c0255db01a7e7bb46657c991879d9b8f35c3281364
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as a phishing trojan. It contains embedded URLs, suggesting it is designed to lure users to malicious sites. While no scripts were explicitly extracted, the PDF structure and detection indicate malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7483

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/um1bUVUAM38/square?utm_term=have+the+same+numbers+won+the+powerball+twice
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7895bed7e6304395f2e98/1625786715849/god_hears_the_prayers_of_the_righteous.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee1eb7df3d323292ce4764/1626218167529/reese_witherspoon_untamed.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7f52a3e9df788e6cf996/1626111826917/example_of_two_stanza_poem.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e93ff3320dbd0de2820c32/1625898995736/what_color_do_you_mix_with_yellow_to_get_blue.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_off0000cb15.bin
8ca3f58283afddb9e0ab32ae8a48d0d5d544704f9564a9333ff6b0c586e0bc08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB15 17156 bytes
font_01_sfnt_off0000f809.bin
5c050b9a38d41392ab0fd7890f84b4daf48523530776bf460ac0bef2e1d227aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF809 11024 bytes
font_02_sfnt_off00011144.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11144 16792 bytes

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