Malicious PDF — malware analysis report

Static analysis result for SHA-256 d518729a7b7bae28…

MALICIOUS

PDF

73.9 KB Created: 2021-07-13 15:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ec80331e0c9da0b3b6af1032cbd79c61 SHA-1: c7f98ea02875a340558757a93877c6414b277e24 SHA-256: d518729a7b7bae28848d503e6a4b788c1e566f243f57cccb9e20e17a349e981a
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. It contains embedded URLs that likely lead to malicious content or further stages of infection. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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/AG-UZpNbJGc/square?utm_term=923+country+code+phone+number
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ed6ef4fe78435a381861/1625877870969/discrete_mathematics_an_open_introduction_3rd_edition_solutions.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec839c950202184f108b50/1626112924597/class_9_science_chapter_13_exercise_question_answer.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed3caa64a4563c8f7b6e61/1626160298276/pigolimopiwejemunasukir.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c1701b56fd05757a43a8/1625866609046/xikusejanaxuxewimoniso.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed2ccfc439f82871623136/1626156239694/18845261131.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_off0000c009.bin
751f85e17198e6058549596c55f4ed1570fe4f548ffaf1c16b3636c8a0cb9694		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC009 16340 bytes
font_01_sfnt_off0000ea7d.bin
0ace05cf81302a793a59cfe8a9d44f38920b74551ae81030576c6e071ef810a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7D 11028 bytes
font_02_sfnt_off000103dc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103DC 16792 bytes

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