Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca758f39dd566b70…

MALICIOUS

PDF

84.9 KB Created: 2021-03-27 18:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37b5a356600b113d7f0f8cf1d8dade5e SHA-1: 256e2152d3e55a3176ab71312b305b830b36c035 SHA-256: ca758f39dd566b70931ab94ac276e4f1ad3588f9000290e02938feb5ba12afef
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to obtaining a 'Tinder safe code'. The presence of an external URI and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=how+to+get+a+tinder+safe+code
    • http://niwizonoleror.mywebcommunity.org/alesis_dm10x_electronic_drum_kit.pdf
    • https://static.s123-cdn-static.com/uploads/4377125/normal_5ff366d6b6727.pdf
    • http://legalvictory.group/dixie_chopper_for_sale_houstonsfjfa.pdf
    • http://gaydating.world/woxodezijavitgpj2y.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://jarokixepoweso.mypressonline.com/rifuderix.pdf
    • https://bapajoronugenig.weebly.com/uploads/1/3/4/2/134234589/93e4e.pdf
    • https://tumopododekup.weebly.com/uploads/1/3/2/6/132696021/wozamegibojotokej.pdf
    • http://callup.today/healthy_vegetarian_breakfast_bowlso0din.pdf
    • http://womenit.space/xbox_one_gaming_setup_monitoraxpka.pdf
    • https://cdn-cms.f-static.net/uploads/4413110/normal_604470a7ce8c7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/5aa82d02-b61d-4887-8683-585803ad7781/cerebral_palsy_types_in_marathi.pdf
    • http://farovosodiwes.atwebpages.com/break_even_point_problems.pdf
    • https://uploads.strikinglycdn.com/files/07ea9d0b-5ba6-40c2-92db-329902d98a4f/conversin_de_gramos_a_miligramos_ejemplos.pdf
    • http://wubogijogazerew.epizy.com/53979712731.pdf
    • https://uploads.strikinglycdn.com/files/a61e2e07-03f8-438b-8190-f0a7a9fbbc74/fatozelure.pdf
    • https://uploads.strikinglycdn.com/files/b99919ec-5e8f-4578-8fa8-fa90da919fed/the_little_prince_book.pdf
    • http://getitusedoniriv.epizy.com/supply_chain_management_vtu_notes.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://scripts.sil.org/OFL
    • 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_off0000eb26.bin
d8a5dee9b64830862a2d82d0124e8b868b7cb758a0a4fac5fd9c8a2c5b96a1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB26 5000 bytes
font_01_sfnt_off0000fc42.bin
ab2fae44d3bacf6a2487b4936fa5245d212ad16797d0ed4780f48828b42d8326		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC42 10904 bytes
font_02_sfnt_off00012198.bin
a436a07c90af02ea63a61759f016bd32800073adfc36cc94dc5c1c76f55ab773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12198 16344 bytes
font_03_sfnt_off00013759.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13759 4324 bytes

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