Malicious PDF — malware analysis report

Static analysis result for SHA-256 193bc883e47e48ae…

MALICIOUS

PDF

78.7 KB Created: 2021-07-15 12:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 003464b366e11dde9044657715217144 SHA-1: 9c6f5ba01a42d46df5fbfb3676a18cdf21a0ca81 SHA-256: 193bc883e47e48ae05207a36810acbaa1d2849e26da6474bf5a91b20e06e2317
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The PDF contains embedded external URIs, suggesting it's used to lure users to malicious websites. No scripts were extracted, but the presence of external links is a strong indicator of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/~3/0YvHz_IItD0/square?utm_term=a+glossary+of+tribes+and+castes+of+punjab+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e76b4b9234c91c570846a5/1625779020008/most_subbed_twitch.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8de34f2b1c51afa47560/1626115555467/chapter_1_expressions_equations_and_functions_answer_key.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee2ad41f51426150cbdd13/1626221268670/nobody_can_love_me_better_i_must_stick_with_you_forever.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90e0266be7e490f0ed184/1625886210930/89536953054.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edc154e11d817478cee048/1626194260741/the_things_they_carried_quotes_and_explanations.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f4f525441e1b3786f57d/1625814261829/defend_your_castle_game.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e883dc37083541b5f623/1625876611805/comedy_of_manners_in_english_literature.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efd7f1365a201d3c37c450/1626331121705/16300341106.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efe73034f25751eec1024b/1626335024403/nodumumaj.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7663de8c3264fe5d89a5/1626109539808/dicyclomine_and_gastroparesis.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eda6c4c0b9b61b59759fb1/1626187460826/35693030775.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8c94ec3dba77ad335c9c6/1625868622191/depository_bank_meaning.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eddd3a172ba47bdac38caa/1626201402219/tigefu.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_off0000cf55.bin
a4165e36140dad65bb4cc37b0b146e0c6dbae7c2c61056f653bb4d0e7ea45787		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF55 17072 bytes
font_01_sfnt_off0000fc1d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1D 16792 bytes
font_02_sfnt_off00011434.bin
2f07dd68490e815e883e20742f4cc72b010cbef2bef640464d2212c3718c8aae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11434 11260 bytes

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