Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4f8804693bb141…

MALICIOUS

PDF

82.0 KB Created: 2021-07-18 00:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b71d6176a9eabba552b75bc8f8d3973 SHA-1: cdfbce8beb40e9d89ca9a19c8922d6ca1c850a37 SHA-256: ad4f8804693bb1416a115d676ff17f67e72d660a4b81ddb8d90d78dc362fbcba
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, one of which is a feedproxy URL, suggesting a potential phishing or redirection attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the ML detection point towards a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/~3/4P1vZUbBa90/square?utm_term=what+products+are+made+from+corn
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f250669dfa584dc9d4c0f8/1626493030892/ratio_proportion_problems_class_7.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f2cf2b5f13a15bd818227a/1626525483800/solutadafevipide.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edb0a88525735ba0d3731d/1626189992244/wopegosupavonazaxu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2af7027519501fc0ab8ea/1626517360327/track_and_field_british_athletes.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e879ebeafd98094073887b/1625848299273/words_with_z_and_n_in_them.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eca85d69d4b633614a7063/1626122333424/semutowijobos.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee0545a9aa746350d01f82/1626211653664/instrumental_techniques_in_food_analysis.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee381786aa876280bc5484/1626224663613/my_eyes_cry_for_no_reason.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee8d1ffd66ff3739f2b574/1626246431600/petidew.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec77e7c268f363b0859a23/1626109927832/15783659716.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f17e870a71fd0da9b10f2a/1626439303352/7422616497.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f150166186c4310044c386/1626427414183/too_good_at_goodbyes_meaning.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec889c6ad76c097490c20f/1626114204349/according_to_gardners_theory_of_multiple_intelligences.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec899112c1416d2f1b8947/1626114449740/siraluz.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_off0000dd5c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5C 16792 bytes
font_01_sfnt_off0000f56e.bin
43ce87f63496f28f6440dff0a8540de2f4b820f46bfc748382d0d7e243874705		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF56E 17192 bytes
font_02_sfnt_off00012289.bin
bff03d7a6be8858cb708b99fe1edbe3ba2d066a6d49e565e564c236a2d759851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12289 10840 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.