Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d42274dd3d8bbf4…

MALICIOUS

PDF

69.0 KB Created: 2021-04-07 20:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bfee47f8f572949d35e31b6d29b3961 SHA-1: 46623ebdda26522b322d7ef3d1ed48ac193b1419 SHA-256: 6d42274dd3d8bbf490b2dfd56ee8b15e4f4304e3b117cccbbb0cb934c37fa1b2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely used to host or redirect to malicious content. The document body, though heavily obfuscated, suggests a lure related to technical manuals, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/wix?keyword=wireless+communications+principles+and+practice+solution+manual
    • http://saudiautoinsurance.com/12331637659tmodl.pdf
    • http://help-lnstagram-verifycopyrgiht.com/cartilage_and_bone_histologyqorcf.pdf
    • https://cdn.sqhk.co/rujiwujik/bZmIgch/armored_car_2_mod_apk_download.pdf
    • http://reggis.info/debenhams_pet_insurance_claim_formhbosf.pdf
    • http://gakivako.iblogger.org/bsplayer_1._31._196_apk.pdf
    • https://cdn.sqhk.co/giganopof/cF1Coic/xinepi.pdf
    • https://cdn.sqhk.co/zukasedu/idjdyjf/the_best_of_music_80-_90.pdf
    • https://cdn.sqhk.co/najiligopej/ibKhdjj/box_office_collection_hollywood_all_time.pdf
    • http://vaxiliwu.medianewsonline.com/5674371753.pdf
    • http://dompodklyuch.com/why_is_my_sky_modem_flashing_orange66jkx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/joterige/rabal.pdf
    • https://s3.amazonaws.com/dubiditiginowo/14435985763.pdf
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_bedbd24fb8f0448bb5216efc8bd68b8d.pdf?index=true
    • https://s3.amazonaws.com/xefejevife/huawei_mate_10_lite_android_9_beta.pdf
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_7ef4ffdcc31f421fbe05f79580469f6d.pdf?index=true
    • http://lexamokoxerum.atwebpages.com/anticresis_definicion.pdf
    • http://liduvitulugug.onlinewebshop.net/gopunaka.pdf
    • http://zikoliduxa.atwebpages.com/fazubir.pdf
    • https://50e0a74f-e7a5-4ac3-a7a6-4cdd7b1ad00e.filesusr.com/ugd/8a9d9f_8ca675349c21476385d7f85c06cd260f.pdf?index=true
    • http://zafazemebotege.rf.gd/vuravojozodejekosus.pdf
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_63729a2a200b42fb81041c4a5b75a56d.pdf?index=true
    • http://romufadi.epizy.com/how_to_calculate_unbalanced_3_phase_power.pdf
    • http://naxokagad.epizy.com/authorship_of_hebrews.pdf
    • https://s3.amazonaws.com/wewiro/69570274915.pdf
    • https://s3.amazonaws.com/nisoxow/satufisovaruguko.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_off0000d0db.bin
2e3880d0d4f4e11aa38e85d9811ca71743bcbfb2cf23e5e0740a983ed6b1ed6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DB 5232 bytes
font_01_sfnt_off0000e298.bin
1cc5469cdb213757d27aa1b5591924769a9fe23525e30678012735fad7f429ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE298 10276 bytes

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