Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab5d503cd8043b8…

MALICIOUS

PDF

110.7 KB Created: 2021-07-19 14:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dcfd1aa2c1eb46db33612c0705632392 SHA-1: 0a43f15a0007f6ef90421ce10eb1d84888c126e6 SHA-256: dab5d503cd8043b86ab7cf1df930568d313e220b9f3f35ef63f1576cada99041
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is flagged as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/~3/5Aj-mlxkUx8/square?utm_term=born+a+crime+chapter+14
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7acbcba333063f175daeb/1625795772385/sasafezediped.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f4cc0d1db272198fa8a158/1626655757898/need_for_speed_most_wanted_pc_full.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f1e7329f740a1b65950abe/1626466098439/taziwalipofisofumuvujexaj.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed3bc54918f36a6d5e146a/1626160069871/kennel_cavalier_king_charles_spaniel.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f15e26f75f957e35b94135/1626431015104/35937579390.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3ed0d3a33e4096de1d50a/1626598669130/89661949712.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ede4a6b0089c62dc3f074d/1626203302286/38289169222.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee09112485902f3e6f0985/1626212625413/wordly_wise_3000_book_4_lesson_11.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8fc8e0914637f38bd746/1626116041287/billy_crawford_and_mandy_moore.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2ae142be78d526593e6db/1626517012259/kutakukigoxizopuwo.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_off00014c78.bin
b83109754955ef6f8fb32d8f39d8adaafcb150acd06cf36da59c031148349739
pdf-font-stream PDF embedded font (sfnt) at offset 0x14C78 10608 bytes
font_01_sfnt_off00016499.bin
6650d04b5cf7a81f406798f195207d6d443f11d939e7a01b9836537a90cacfd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x16499 18892 bytes
font_02_sfnt_off000196ab.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x196AB 16792 bytes