Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f26cfb4b2aa2674…

MALICIOUS

PDF

84.7 KB Created: 2021-03-20 08:20:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82fd6f64736a4bbcaff7389105c711b0 SHA-1: cecc134d1d06c2c0cc68c598b5dee20d3e1da1a6 SHA-256: 2f26cfb4b2aa2674ed4b3880ea81124129aa48fcc29c2f9be65cecde6dd00c57
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a website offering 'go launcher cracked apk download'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The embedded URL is likely intended to lead the user to download malicious software or further compromise their system.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://resalured.ru/wix?keyword=go+launcher+cracked+apk+download
    • http://fitnesspack.net/jobuduto8qoqu.pdf
    • http://torevifij.iblogger.org/febrile_neutropenia_guidelines_idsa_2017.pdf
    • https://static.s123-cdn-static.com/uploads/4462730/normal_5ffcfeed8d616.pdf
    • https://cdn-cms.f-static.net/uploads/4369914/normal_6029c6aa3ecd0.pdf
    • http://kmikaerfs.ru/2014_coachmen_clipper_priceswpgmj.pdf
    • http://copyrighthelpcentral.com/damejetigalejz670z.pdf
    • http://grinallex.shop/29181101031t399.pdf
    • http://barashik.space/call_of_duty_4_zone_english_folder_downloadmlg7e.pdf
    • https://cdn-cms.f-static.net/uploads/4458837/normal_5fd12e5bd98b9.pdf
    • https://cdn-cms.f-static.net/uploads/4366984/normal_600ec19599065.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c8e7c8f0-f0cd-4926-ab3e-24ea443654b1/3388337885.pdf
    • https://uploads.strikinglycdn.com/files/b796cc3e-42c3-44f4-9581-4694625e968f/big_nate_hug_it_out_release_date.pdf
    • https://uploads.strikinglycdn.com/files/5ad0e7cb-a225-4354-a788-b30eca8ce3c6/canon_xh_a1_video_camera.pdf
    • https://uploads.strikinglycdn.com/files/d4d4ef10-13d0-4abd-a89f-8ab7b9d89bb8/wexexegaviwefugunewutaka.pdf
    • https://uploads.strikinglycdn.com/files/5ca78718-4dad-4ef3-a93c-5968a3d377ac/34485807652.pdf
    • https://s3.amazonaws.com/jeworurowam/fate_stay_night_visual_novel_route_guide.pdf
    • https://s3.amazonaws.com/midipes/guided_meditation_for_creativity.pdf
    • https://s3.amazonaws.com/zijivevip/football_trivia_questions_and_answers_printable.pdf
    • https://s3.amazonaws.com/baxadelefofibuz/bangla_romantic_natok_2017_free.pdf
    • https://uploads.strikinglycdn.com/files/16a7faec-4303-449c-898c-9cb4f736cfb0/ps4_date_de_sortie.pdf
    • https://uploads.strikinglycdn.com/files/83794784-9cd2-45a3-8084-0fd4acce17c4/sifonedefelexawetupepi.pdf
    • http://lidazadopedu.rf.gd/ideological_conflict.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed99.bin
977e51705ec144ebca2fd03be81e325a2ac11a7d5111231b54cd63d9d5a15d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED99 5168 bytes
font_01_sfnt_off0000ff3c.bin
bd036edb292ff7d4b2f59128b5c9c5d4b127e066b74e44403e0c0c1e4dfdfe17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3C 20252 bytes
font_02_sfnt_off00012fff.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFF 16164 bytes

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