Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f07e05c8fd737d…

MALICIOUS

PDF

84.7 KB Created: 2021-07-17 05:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: df274bd5c5b2be2e96a3614d969c7dce SHA-1: 29f482244dd37be9ff3080b331a77dfda873a33f SHA-256: e9f07e05c8fd737d40911f6aeff0da3fd3b0750d4e28b72ce64c7343ae407c4b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. While no executable scripts were found, the presence of embedded URLs suggests an attempt to lure users to external resources. The primary IOC is the embedded URL, which could be part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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/mHcMeCcfVl0/square?utm_term=expert+first+aid+trainer
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0d689adf71e7547c8b516/1626396297222/51039016626.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2067cf3cd9e2854be0963/1626474108195/class_6_chapter_14_science_question_answer.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7d363ba333063f1781241/1625805667582/kewatefovufa.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eda624834e745de9d16099/1626187300632/87602811441.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0f25915846f0d14e85345/1626403417698/papa_louie_when_pizzas_attack.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee8731537273346e33d81b/1626244913216/novilaxemagavaro.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee4a17ab0cb8743be56a0b/1626229271707/bashful_snow_white_and_the_seven_dwarfs.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edef1dd6ef6771c1ddaa7b/1626205982096/90609340043.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e85d9db36e8a0f29089e57/1625841053729/manually_propelled_vehicle.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f23501de9f7d6ab7b047e0/1626486017895/cleaning_in_progress_meaning.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_off0000eaaf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAF 16792 bytes
font_01_sfnt_off000102c1.bin
26d1b41a5abbc6a4b274c30ceb7657ecf03996944c40c1453defbb1757b2229d
pdf-font-stream PDF embedded font (sfnt) at offset 0x102C1 16824 bytes
font_02_sfnt_off00012ed1.bin
055bdd6385725f72d650f263bba277b95df98e020f7d238ff8dff2880f437ebb
pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED1 10412 bytes