Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afc99c7d6013764…

MALICIOUS

PDF

143.8 KB Created: 2021-07-20 20:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 62f1d9d6105038349cb3874bd9e382e5 SHA-1: 336a31944347b08fdf4c8f176c138b6fc8143d53 SHA-256: 0afc99c7d60137649a9da241c1af608dde5256d09bfa412e90efb5a3002b9001
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains embedded URLs, suggesting a phishing attempt to lure users to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.2491

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/S-4CHg4Qmwo/square?utm_term=male+bengal+tiger+weight
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edc479c6126f45c3df4664/1626195065246/poxaxapulor.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f657a3ea390a0240314479/1626757027604/ocd_and_related_disorders_dsm_5.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e959b9defa333328ac32af/1625905594044/download_song_aww_tera_happy_birthday.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2d11ec5d9e6782cdaec1b/1626525982451/mp3_song_download_apk_for_pc.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f27e5d25edf1230651f28e/1626504797757/best_way_to_answer_the_question_tell_me_about_yourself.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001cb54.bin
3a385e4dd4bfbf4849f622134eeb41cd672e0e7ac1b4c2213eb6cb942943407e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB54 1764 bytes
font_01_sfnt_off0001d39a.bin
260815e10553bd53848db4f8e406665177393ca50bfb5afceb7e16c5530ff45c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D39A 10320 bytes
font_02_sfnt_off0001ead5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAD5 16792 bytes
font_03_sfnt_off000202e7.bin
0f52b751559d98075bd0971bb5ca5f0a49153c8b842a5c7d6106f6c7e8a786fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x202E7 18964 bytes

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