Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9e0c8780f95bf6…

MALICIOUS

PDF

81.9 KB Created: 2021-03-29 19:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc86d44ee8bbf72e77c580eef776dcf6 SHA-1: ee28d20f834f21d2c9effcdbf2f3da35a4b7a12a SHA-256: 3e9e0c8780f95bf6a8bd4903e1b248817fbd03d847d8a0ff28590afe5e6cc77e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains external URIs, such as 'https://druttle.ru/award?keyword=greenhouse+effect+project+pdf', which are likely used to host or redirect to malicious payloads. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection suggest a phishing or scam lure designed to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=greenhouse+effect+project+pdf
    • http://faceit.su/is_the_game_of_life_on_ps4rlsyk.pdf
    • http://reduslim-siteofficial.site/black_lion_claim_ticket_scrapik3wi.pdf
    • https://cdn.sqhk.co/wokiwife/qgeVjgG/color_code_chart_for_electrical_wiring.pdf
    • https://cdn.sqhk.co/zadexona/jifnieQ/93945948762.pdf
    • http://molupopedidi.iblogger.org/the_elephant_man_book_wikipedia.pdf
    • http://servicesforsupport.com/82151380791xwiy4.pdf
    • https://cdn.sqhk.co/niserutom/OrEjehd/galaxy_watch_3_titanium.pdf
    • https://cdn.sqhk.co/noperizapewo/2icm0jh/retro_missile_command_arcade_game.pdf
    • http://eurofamily.pro/6015073368phlj8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d6236f05-450e-4b96-9875-1783d83c708b.filesusr.com/ugd/912de2_b2fc7f105c134765b267b97a8dfd45dc.pdf?index=true
    • https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_a19c3f6526304c189cb753f7f4518d3c.pdf?index=true
    • http://sobavetugobi.epizy.com/sindrome_anemico_tratamiento.pdf
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_1ef9fa3b473e4ef19f19aef666e89578.pdf?index=true
    • http://savefativiluz.epizy.com/eeo_reporting_requirements_2018.pdf
    • https://uploads.strikinglycdn.com/files/4c42e93e-61ca-47e6-a0ea-49f05da1a811/snow_whitening_gel.pdf
    • https://uploads.strikinglycdn.com/files/461e8a91-8b80-4877-9633-02c96b0ac2ab/13273913482.pdf
    • https://uploads.strikinglycdn.com/files/425ba92b-0dea-46e3-818e-29afbbc5cbe4/how_to_write_an_assessment_plan.pdf
    • https://uploads.strikinglycdn.com/files/96f932bb-54d7-4c98-9d44-9a55525ce583/yoga_dog_bookends.pdf
    • https://uploads.strikinglycdn.com/files/0d895266-7d00-4a20-a2f0-00cc71f1500f/how_to_sew_a_raggy_quilt.pdf
    • https://uploads.strikinglycdn.com/files/0c86b357-0be8-480c-af2b-9d185e452a16/metallica_nothing_else_matters_chords_for_beginners.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_off0001041b.bin
8750e0da8366408143e8656df2957c57607a29c06bee6eb1c959ec5afc454225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041B 5108 bytes
font_01_sfnt_off00011583.bin
c5042fe86cced0ae4934e7c06d13bba004561c54d57ab9171e676d55e4b8c381		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11583 10852 bytes

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