Malicious PDF — malware analysis report

Static analysis result for SHA-256 67784034dff901c4…

MALICIOUS

PDF

102.5 KB Created: 2021-07-13 20:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c7ec6cc0cd19a1a9ca9aded5d20ea71d SHA-1: e1946e552ea0a7f7ee1893b555e42f1476c7a93f SHA-256: 67784034dff901c4d1ace11213c8e6be829fd116fca84603249e934dd87345ca
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'oniceh.ru', which is likely a malicious domain used to host further stages of the attack. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the external URI strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9782

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://oniceh.ru/square?utm_term=smarten+up+meaning
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c9721b22c82f862d6ede/1625868658632/41000284373.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8ff923b7e7c63344eca20/1625882514282/the_meaning_of_dispatch.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8045785664d35b0e924d7/1625818199445/jagafolidev.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed971cc8cbd011b90b5e32/1626183452889/cardiovascular_system_study_guide_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e768b0856bf3314cc7e61d/1625778352357/4583033914.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec917dc81c37306b2fca10/1626116477593/c_for_machine_learning.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8f05b3b63f0898f2c807/1626115845505/xudebadofawojuzinaxakugur.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e85cdf89d2062abbfa6415/1625840864208/xexotoragak.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eca13f7dc7460dd09dacdb/1626120511303/first_light_credit_union_near_me.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfb2.bin
35f4dd8aa80aaed9c3de7cc111bc5a9cd4f08ba13d4e981941600fdf5c0ee401		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB2 16992 bytes
font_01_sfnt_off0000fbda.bin
4de16e022e023cbe0f9f89239efb993062df40e8e42dab2ac65bd552a4c15927		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDA 10436 bytes
font_02_sfnt_off0001137b.bin
6a970e9c9449749e92e70f485415428eb4e855c9c3cd44d2efbddb9d2df6f019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1137B 35892 bytes
font_03_sfnt_off000175b7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x175B7 16792 bytes

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