Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7207e34c055143…

MALICIOUS

PDF

216.5 KB Created: 2021-03-31 08:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32e6b5f0a329038a26c469de7d419d04 SHA-1: a46f327689e90f13440651e3d89ec7957b78e8db SHA-256: 7e7207e34c055143b9823172eaf6b97aae7f4771f7ef8e56242fb93be4dc8137
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one URL specifically matching the document's apparent search query theme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a search query, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9281

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://jacksth.ru/wix?keyword=flip+and+see+ecg+pdf
    • http://shoppingyxplus.xyz/80336366145ji9dk.pdf
    • https://cdn-cms.f-static.net/uploads/4413122/normal_5fd5f424b5b00.pdf
    • http://olymptrade.buzz/tennessee_titans_live_game_radio1mtyz.pdf
    • http://vinnipoh.fun/brother_printer_ink_lc101_lc1038ft5e.pdf
    • http://milesnires.xyz/new_zealand_standard_curriculum_vitae_templatesgiit.pdf
    • https://cdn-cms.f-static.net/uploads/4412570/normal_6036ddf30d6bc.pdf
    • https://static.s123-cdn-static.com/uploads/4388407/normal_5ff2769289787.pdf
    • http://alex-chekalev.com/694019436094l3pb.pdf
    • http://smartcreditcheck.info/905127590969fd0f.pdf
    • http://bcipreactivaperu.com/metronome_beats_downloadxzmmy.pdf
    • http://getyourscore.info/how_to_fix_screen_on_toshiba_tvdfp48.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/patilawasu/polaroid_onestep_sx-70_year.pdf
    • https://s3.amazonaws.com/befarekogol/99176163327.pdf
    • https://s3.amazonaws.com/bupaxomu/calendario_de_vacunacion_2018_chile.pdf
    • https://s3.amazonaws.com/vuliwisuwig/vunadoripiw.pdf
    • https://b5526579-b22d-45a0-8251-9885a72cf3eb.filesusr.com/ugd/0cd019_1df82da9ca6a44cdb042dd39f3c6ac08.pdf?index=true
    • https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_d62c1510795c47a48b2a7b5059d7c266.pdf?index=true
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_6235d2c4243f4160ad8c2aa066027db3.pdf?index=true
    • https://s3.amazonaws.com/tamobalasu/budget_worksheet_excel.pdf
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_55da787aa12046cd8fa5602f6c7df8ce.pdf?index=true
    • https://s3.amazonaws.com/ronatiduzoxij/what_are_greek_and_latin_suffixes.pdf
    • https://s3.amazonaws.com/xomepixo/audio_bible_kjv_free.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_off00031c47.bin
deb024539c8f359e07f15a164c9bd1a91efac8437a3c6d5e87cb06dbf3255baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C47 5184 bytes
font_01_sfnt_off00032e0a.bin
461e1264eccea45a910912be58fcb92dbb87e341ae019d72639fde090ebb4610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32E0A 10608 bytes

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