Malicious PDF — malware analysis report

Static analysis result for SHA-256 293dccb562cd8a40…

MALICIOUS

PDF

70.7 KB Created: 2021-03-08 00:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 516ac049447fccefbdf7b66b88be0ce2 SHA-1: 9f6db2aec49c483168d19975d5d364263c88d329 SHA-256: 293dccb562cd8a401279103773ad92378d1f60409a3ecc632382de802c2a4e14
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=the+art+of+violin+making+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426557/normal_600f87f36ee01.pdfIn PDF document text
    • http://mnogoturov.com/81054255630hqgl7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_601b398249a5a.pdfIn PDF document text
    • http://mesretly.xyz/94065107775kxk59.pdfIn PDF document text
    • http://xitnet.fun/usmle_step_1_scores_percentileixr4t.pdfIn PDF document text
    • http://finoginujowiwi.mypressonline.com/oster_golden_a5_two_speed_clipper_review.pdfIn PDF document text
    • http://djami.ru/do_doorbell_cameras_have_a_monthly_feeni8f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/como_por_instagram_em_modo_noturno_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94fa0f47-d48f-43f3-a075-29639a60c7d1/what_bolt_pattern_is_a_jeep_cherokee.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/bepinubef.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/maya_animation_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/cengage_physical_chemistry_part_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cc9f66c-a604-4de7-9c3b-7a109673a654/how_to_make_conversation_class_interesting.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/canon_rebel_t5i_manual_focus.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/2_digit_addition_with_regrouping_coloring_worksheets.pdfIn PDF document text
    • http://bitenozof.atwebpages.com/ryujin_3.5_diagram_full.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/bridget_everett_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfb55f9d-ffef-41ee-abb9-3a6df30249f5/the_revenant_full_movie_download_filmyzilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d46729-c7be-4320-80ad-0d999ba06716/fonofuzorur.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/97486923955.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F9 5348 bytes
SHA-256: 3dcf2e93488d063110ac96fe73e53e568201da521980c6a882081cbe63f187ae
font_01_sfnt_off0000ec0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0A 9908 bytes
SHA-256: e11cb27e5370daeef7d92a93c40903c088af3eddd2e840f35c30eca2a2c4447b

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