Malicious PDF — malware analysis report

Static analysis result for SHA-256 5692076567e2ef8a…

MALICIOUS

PDF

80.6 KB Created: 2021-07-21 03:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c18b922da64bd34915ccd02486698a27 SHA-1: 2c1dfbde76aec4f3e8586a4ea18da7064c3a50bd SHA-256: 5692076567e2ef8adb1e6471f0d97ab6ffa199398804c9a9837b05670d774aa1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs that likely lead to malicious content or further stages of infection. Although no scripts were explicitly extracted, the nature of the detection and the presence of embedded URLs suggest an attempt to lure the user into a malicious site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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/kVSxLQpkboc/square?utm_term=how+many+dimes+fit+in+a+16+oz+bottle
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec78b57e2b6271615a55c2/1626110134095/63645753364.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee19881cf0e6777f2bb7ca/1626216840506/find_the_volume_of_a_rectangular.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec942b8c19ad4998dc58aa/1626117163565/forever_young_mp3_free_download_blackpink.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f384a9db752c5e49adfaae/1626571945689/frequent_nighttime_urination.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edb66ccd5f69124b43b126/1626191468556/interior_angle_of_a_10_sided_polygon.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f3545a7e0b4d5f6b1b1d87/1626559578168/homeowners_tax_exemption.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f5e356da5eb01b00327185/1626727254296/patiropotiwelemopudofu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed0b5136a7a57c1ceed96a/1626147665514/wuwesafu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7d1b668ba31612b561dc/1626111259239/statistics_and_probability_quarter_3_module_3_the_normal_distribution_answer_key.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_off0000d6d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D8 16792 bytes
font_01_sfnt_off0000eeea.bin
29375477f9656deabcfcc842af5a7eb378a81131ca70683badaf79031ad9b783
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEA 17424 bytes
font_02_sfnt_off00011c74.bin
70fbf1b20e3730324c8adf976b143fc074de77a55d73278f106bbd2ae8f323f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C74 11028 bytes