Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f0b240f8c53811…

MALICIOUS

PDF

73.1 KB Created: 2021-07-13 15:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b64c8295611a218e5892e278c524e6bd SHA-1: e18a5de059266de212b8f0a60de20d7b72dc6190 SHA-256: 60f0b240f8c53811587b335efd28dc7406c544198c080870af9bc8f35a3faaf6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a URL that, while currently marked as benign, is indicative of a phishing attempt. The PDF structure and embedded content suggest it's designed to trick users into visiting external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8315

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/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=examples+for+multicellular+organisms
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8debab68d8f0f4bf49003/1625874107067/quiz_picture_round_with_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c8994be6b65fb4b14edf/1625868441425/wifupukovobolovoja.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e944a858c6623f038374e2/1625900200168/how_to_astral_project_guide.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec818a82b4c978cf416deb/1626112394850/tedox.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed363c64a4563c8f7b280c/1626158652643/hormones_released_from_anterior_pituitary_gland.pdf
    • https://medlineplus.gov/organizations/all_organizations.html
    • 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_off0000c09f.bin
5a7059b4a5e72f2377db3830226116e7dcefe31d2de974dc48be67d32073f0ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC09F 11008 bytes
font_01_sfnt_off0000da37.bin
31f0f2f8d376014d827bf75390d0dbd957d721d76110994cc6c753a3ee0af658		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA37 15068 bytes
font_02_sfnt_off0001006e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1006E 16792 bytes

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