Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd056e30ba26fd7…

MALICIOUS

PDF

80.5 KB Created: 2021-07-13 16:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f15fe95b6e61af78a5ba3ca146898975 SHA-1: c1173b182ac243db03c228cd5fb1f2f5105e51ec SHA-256: bbd056e30ba26fd77953d840b5f35cae238e9be568318551083f1b95386c9034
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect the user to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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/~3/9xivtwLAy4k/square?utm_term=how+can+i+fall+asleep+really+fast
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec92a61cff58014d54f5d2/1626116774993/kukabewi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e833c14b964f05b84baaa6/1625830338013/34131982366.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed21f00318596fdcc01915/1626153456816/as_is_his_wont.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecad2f45c120300360fc71/1626123567299/jatidobipofuxipokaf.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8ae34c0b954f9ea4e5be/1626114787461/society_and_the_healthy_homosexual.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec89910d838b6c850d89dd/1626114449424/87359092079.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e205f229ba2ea833dc7d/1625874949659/vekawafuvu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecf13ab1b13d3c3c0b48fb/1626140986414/10320884544.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecb343a506f377f536daad/1626125123499/basic_economic_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60eccfb9929f7b3a9fe21b35/1626132409555/berogejevabominilurotige.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8a27cf4243e64cf6ff4b4/1625858684190/samufuratipo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7b1dc8b0d544b6d6c25b/1626110749400/word_for_making_someone_feel_bad_about_themselves.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_off0000dc6f.bin
412f4d9588e387946f4bf316121a6b553895305100faa07b51488e6e443cd783		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6F 10664 bytes
font_01_sfnt_off0000f50c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF50C 16792 bytes
font_02_sfnt_off00010d1e.bin
4bf2597790e2b07495415c6ac0b3e5fb7db947355abf70f3d3b69eb1bb72964c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1E 15752 bytes

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