Malicious PDF — malware analysis report

Static analysis result for SHA-256 a24f734fed71730d…

MALICIOUS

PDF

79.7 KB Created: 2021-07-18 11:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0e7af1717aa7ac8a51a03b44940700df SHA-1: 9924306ad25de179bfb2c08f9781603b41c7c28e SHA-256: a24f734fed71730d90af6726bf3b6ee3e5ff98116d48bb316b39827fe0692d23
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document is designed to trick users into believing they need a password for an archive or attachment, a common tactic to bypass gateway scanning. The embedded URL, while benign, points to content that could be used in a social engineering scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pL_UGxDroB4/square?utm_term=how+to+find+my+voicemail+password
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec9b3c90a3fc49531b731a/1626118972784/write_a_polynomial_with_the_given_zeros_calculator.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2c177ac77840235647aa3/1626521975816/sustainable_vegetable_production_from_startup_to_market.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f357066167905317db12c4/1626560263093/motorcycle_parts_list.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_off0000d2d6.bin
ab441c289daac54bc80a8f9b17dd58e75b5c77e625d88846a22ea23741b9a0f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D6 17032 bytes
font_01_sfnt_off0000ff8f.bin
a3f50aa7fbc33fee0495fd62e0b1e10bdd80813cc4087d72bd29da8b77eac12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8F 11040 bytes
font_02_sfnt_off0001193e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1193E 16792 bytes

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