Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b9337ee0fd70b97…

MALICIOUS

PDF

83.9 KB Created: 2021-03-18 08:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1bd0443117402510ba5fd600c9fff0f SHA-1: 3690168f1add0664d606be01123146dbac907b17 SHA-256: 7b9337ee0fd70b976166752a9471818871d77e2dca4be3457201ffa17fd8f5b6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a free PDF to Word converter. This lure is a common tactic for phishing or distributing further malware. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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/award?keyword=pasar+de+pdf+a+word+gratuito
    • https://static.s123-cdn-static.com/uploads/4461249/normal_5fc995b61d15e.pdf
    • http://noxogejukebe.mypressonline.com/72238211536.pdf
    • http://zovolexune.sportsontheweb.net/sawepisutipenivasidusali.pdf
    • https://static.s123-cdn-static.com/uploads/4388814/normal_6004da344ea65.pdf
    • https://cdn.sqhk.co/kedetofido/RRdhewL/90567327853.pdf
    • http://lopitimew.mygamesonline.org/jumabujazunive.pdf
    • https://cdn.sqhk.co/ridefapagol/ijWihcO/fidavufawanixaduluw.pdf
    • https://cdn.sqhk.co/lasumalena/Rie5Ahd/iala_buoyage_lights_at_sea_apk.pdf
    • http://pusatokolerax.mywebcommunity.org/81221949792.pdf
    • https://cdn.sqhk.co/xegunorasu/jgicmgj/free_mouse_game_for_cats_on_ipad.pdf
    • https://cdn-cms.f-static.net/uploads/4369499/normal_6041404ca6a8c.pdf
    • https://static.s123-cdn-static.com/uploads/4413119/normal_5fe1bfef63e4a.pdf
    • https://cdn.sqhk.co/dufolatik/iiiahcE/biwomudumilibijotot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cbaa097c-2846-40ee-a1a4-3b244e4b2724/viledarinekurixin.pdf
    • https://uploads.strikinglycdn.com/files/dc9c8299-fba4-4171-88e9-cb918dca0c40/2020_toyota_camry_xse_awd_for_sale.pdf
    • https://s3.amazonaws.com/viregujipowuru/64668094048.pdf
    • https://s3.amazonaws.com/midaguvimabof/mlb_braves_uniform.pdf
    • https://s3.amazonaws.com/godewumazek/is_there_an_extension_on_renewing_your_driving_licence.pdf
    • https://s3.amazonaws.com/xanunafojuloki/cyclone_v_datasheet_altera.pdf
    • https://s3.amazonaws.com/nisoxow/bluestacks_64_bit_windows_8.pdf
    • https://uploads.strikinglycdn.com/files/43719b2f-3751-4daf-9da4-c96f0071a035/81294480214.pdf
    • https://uploads.strikinglycdn.com/files/f34ad1d9-2018-471e-ae28-17f1b1860c82/pukojozanov.pdf
    • https://s3.amazonaws.com/luropiw/barish_photo_hd.pdf
    • http://dejibokakar.onlinewebshop.net/85095892211.pdf
    • https://s3.amazonaws.com/setaxilitozuko/94104608585.pdf
    • https://s3.amazonaws.com/tokit/58151407404.pdf
    • https://s3.amazonaws.com/difigomisosak/what_is_modified_curriculum_and_instruction.pdf
    • https://uploads.strikinglycdn.com/files/73b3b004-b6e7-42d3-b3f5-ff48aac62bdb/37467018280.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_off00010bee.bin
8ff9017dafe15c878daee4b60c3d121cb9d47360e5e27914ea6dc4a528c8bde3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEE 5272 bytes
font_01_sfnt_off00011e02.bin
da8bd498c8ff82501f7eaa7b8caf1ccd29d72abfe60f448935f546a9de516395		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E02 10504 bytes

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