Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49d213fb8646179…

MALICIOUS

PDF

122.2 KB Created: 2021-07-16 03:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 594112f9da566340c34b9ae352f9ecd8 SHA-1: 803404d0b45f4a1ad6cd5ae07072ee7fc4696a97 SHA-256: f49d213fb8646179b8174709099af2b006bff88caed4d46dfcdd20755b66e563
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI points to a potential attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

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://huntic.ru/square?utm_term=all+cod+zombie+maps+in+order
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed2c9d67dd777ebfbe856d/1626156189965/sukujowimetaguwituwibuz.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0756bbe875f2301079fd7/1626371435174/woocommerce_product_image_php.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edff9ac450ee473082adb9/1626210202455/67250446059.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edb53cc0b9b61b597722c7/1626191164489/by_virtue_of_meaning_in_english.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7ab8c217102653d5332e/1626110648138/meaning_of_cynophobia.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f073194bddb81875f15acf/1626370843171/oxford_valley_mall.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e87e452de0eb47a893ddbd/1625849413478/rumebelotujuwigotudujitot.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_off00017bf5.bin
9510a8efbaafc71e38f6104537b0ed642f5aad091a3a385b893533ace6024949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BF5 10756 bytes
font_01_sfnt_off00019473.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19473 16792 bytes
font_02_sfnt_off0001ac85.bin
d295d5c742efecd9f3abfcbb5f61095e9bbe43496296de17f1c431dabced7d1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC85 18324 bytes

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