Malicious PDF — malware analysis report

Static analysis result for SHA-256 de953940907e5df0…

MALICIOUS

PDF

83.1 KB Created: 2021-07-22 11:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1516b6687b1c1a8c7216063be5093846 SHA-1: 58beb68d7cbc10af2f1acf4aac2098ab839809bc SHA-256: de953940907e5df051f7dc0a828080b6a64b527e257998d667f36600b7b16169
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI that points to a URL, suggesting a phishing or redirection attempt. Although the document body is heavily obfuscated, the presence of a malicious PDF classification and an embedded URI strongly indicates a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/NsX9ihectO0/square?utm_term=a+wrinkle+in+time+online
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f5430426c2747482f6a2e7/1626686212770/10485790773.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f01ebf79f953043cbfd206/1626349247148/reading_and_use_of_english_cae.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee5ff802e0767984f5a98d/1626234872482/how_to_hack_keys_in_subway_surfers.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edbe66a0f2ca3483ce7f17/1626193510482/32519206042.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8b618bb04542cee55ee7/1626114914007/weighted_beta_formula.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f917476c04540b030f6864/1626937159317/90152161197.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7fafd86d8930991a78c64/1625815805976/practical_report_template.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f3c14cc2d40e67ec0fb6b3/1626587468914/wii_component_cable_black_and_white.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0c4774bb49071de13c353/1626391671776/ziruvofavofotuvub.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7e6045eabb22f35db238a/1625810436690/cv_format_for_engineering_students.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f09eb49f9225733f6cf760/1626382004182/current_powerball_numbers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f04dc99ad02013e36fe287/1626361289874/the_chemistry_of_calm_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f096c596827e1f9b448aa2/1626379974168/alcohol_melting_and_boiling_point.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f6d84ef8499b659148cac3/1626789966417/aristotle_and_dante_discover_the_secrets_of_the_universe_online.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f5648923bf9c1bcaff1e20/1626694793262/sherlock_holmes_and_the_red_headed_league.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f8c34bd0dad67a22d65181/1626915659685/different_types_of_attitude_scales.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f14636fcdff1298e567e5c/1626424886127/76354881884.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f057c40d9e4679a05a1548/1626363844218/reduction_potential_of_oxygen.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f00d8ec57e07264c217a25/1626344847007/rinurefajelafujavosuvosok.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94ea837cb904475615540/1625902761074/one_more_day_wood_brothers.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f85c40cc3f8a3514d18a3d/1626889280573/my_singing_monsters_epic_kayna.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_off0000e5d1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D1 16792 bytes
font_01_sfnt_off0000fde8.bin
cf51de408c9b8d31fb2b09dd06e3db1eb83e03738667bd90e580ca3f8eb50a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE8 10096 bytes
font_02_sfnt_off00011465.bin
d47d50c371e4af0aa9967202a04cd5f3e0d6bae3044044951aa21e1dbd0e1a7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11465 16060 bytes

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