Malicious PDF — malware analysis report

Static analysis result for SHA-256 d584faad43732353…

MALICIOUS

PDF

84.5 KB Created: 2021-07-14 00:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f4744342bc60a90443a0d79fc15ef964 SHA-1: ef7e607c9c8bac97cd4adf2a67f090fd339faee5 SHA-256: d584faad437323531c5bb92c54c5e25af454cc66282df2bc29b97441ef8812d8
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 attempt. The PDF contains embedded URLs that likely lead to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into navigating to a potentially harmful external resource, likely for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8790

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/UZrB20b2Dcg/square?utm_term=question+answer+of+chapter+federalism+of+class+10
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed43c02271a75a72d10af7/1626162112615/38668148508.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8cfbac4ce500af8448145/1625870266359/92118694277.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93753b132fa3620743b7f/1625896787241/a_quiet_place_part_2_free_to_watch.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edfee924c32e4364b7d0dc/1626210025576/pufulovagu.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca599af807f1e1528c207/1626121626017/borewell_meaning_in_marathi.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edfef724c32e4364b7d141/1626210039457/download_the_walking_dead_season_2_all_episodes.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e76c0b7cf3bc63ca22a35e/1625779211267/how_to_make_a_game_in_c.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_off0000e6ec.bin
afb05ec8a4d61977c9c7e2655de26bd45d26afbf952becbcc9a8cc4ea26086ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 11304 bytes
font_01_sfnt_off00010179.bin
5fd17cf905386b48eb006004dc2fb47eb2dd7bf5dcfbe098ffe80eaa67ae081f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 17048 bytes
font_02_sfnt_off00012db3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB3 16792 bytes

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