Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6254dd3e708c70…

MALICIOUS

PDF

86.0 KB Created: 2021-03-14 17:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b4d815e60efaec0466f29dad6826897 SHA-1: 91bf9d5e95e2ef121f075b9245e7b2f3be1a9328 SHA-256: ba6254dd3e708c70b2daf15229b0ac52acbba7a3e852e85db261f6d94b62a676
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'druttle.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://druttle.ru/wix?keyword=best+mage+build+terraria+1.3
    • http://greyfruit.space/tiny_town_miniature_golf_estes_park9awuz.pdf
    • http://hookup157.site/dnd_5e_arcane_cleric_guidedr10s.pdf
    • http://hyipinvest.site/nazanujejifonabfetz.pdf
    • https://static.s123-cdn-static.com/uploads/4450139/normal_5fde93241f288.pdf
    • https://static.s123-cdn-static.com/uploads/4484805/normal_5ffac5c79b7ae.pdf
    • http://wei-nmvc.com/482501586899efjg.pdf
    • https://static.s123-cdn-static.com/uploads/4484834/normal_5fcdfdd153453.pdf
    • http://itprod.space/rental_agreement_template_albertawu0ah.pdf
    • https://static.s123-cdn-static.com/uploads/4488807/normal_5fff2451cb965.pdf
    • http://de-bewertung-889562.icu/kikejexabujofizunibebz8r8v.pdf
    • http://nnorm-id.com/cognitive_reframing_worksheetgfphx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d8d22a80-29b8-4a2d-8429-898731755757/fiwigadekiteguv.pdf
    • https://uploads.strikinglycdn.com/files/00b3e07b-7e18-4da8-8a90-39158672a7c9/using_mpc_essentials_in_pro_tools.pdf
    • https://uploads.strikinglycdn.com/files/34e98c72-8256-49ed-a9c5-1c6385128d42/a_short_history_of_the_united_states_sparknotes.pdf
    • https://s3.amazonaws.com/tapelu/ancient_indian_astrology_books_free.pdf
    • https://uploads.strikinglycdn.com/files/e27c73a1-4bfc-4b62-8937-9a18576044cd/21452789349.pdf
    • https://s3.amazonaws.com/xajowu/mugaxibo.pdf
    • https://uploads.strikinglycdn.com/files/ddb060a7-354e-4c45-bc26-11528370566b/xakajemenadimofam.pdf
    • https://uploads.strikinglycdn.com/files/e6c50a96-06b4-434a-afaf-9829265f5a5a/44976365332.pdf
    • https://s3.amazonaws.com/rurovikejigibu/29473811080.pdf
    • https://uploads.strikinglycdn.com/files/3ed6844d-d1fc-415a-8a72-fd1f467eb937/gabowi.pdf
    • https://uploads.strikinglycdn.com/files/5bd7a502-a82b-4484-b50b-5895e2ceec7e/tazinodujamijimunerari.pdf
    • https://uploads.strikinglycdn.com/files/7e9b76fb-9d6e-4de2-903c-e87d61f492ba/how_to_turn_on_polaroid_onestep.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011078.bin
204f916401afd1dbc25c3715811c730d89ae5d4a8d16a8f2c388f18a00c76e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11078 5580 bytes
font_01_sfnt_off00012363.bin
a9040a260fa4a8d8aa8b71aafd4f2016b9fb82c89cbbd9fe9fa7e1e42e8788cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12363 11044 bytes

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