Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c9acc793e5e32e…

MALICIOUS

PDF

87.5 KB Created: 2021-03-21 23:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2973aa304b05ae802c16fcd745c808b2 SHA-1: de1b0addb2eef4b5f3cc0172ea0eb426247248fd SHA-256: 46c9acc793e5e32efa7dd1157958fe5f44ce076361003f30e124ebb7e9d04ce7
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to contain keywords related to the external URL, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/aws?utm_term=g+shock+5146+ga110rg
    • http://arenaprobet.com/reped39oia.pdf
    • http://organicnu.info/xenujb73h2.pdf
    • https://cdn.sqhk.co/tubafejog/fje2gf7/craigslist_los_angeles_california_motorcycles.pdf
    • http://lianhua.life/batman_villain_joker_theme_musicus3m1.pdf
    • http://rineset.xyz/dabanivobemezix7ivc0.pdf
    • https://cdn.sqhk.co/mozigizax/ejbJOaJ/linirizepidido.pdf
    • http://twenty-promo2020.ru/how_to_use_aqua_tech_5-15itk3p.pdf
    • https://cdn.sqhk.co/xaderipamuva/gj5wzPU/31215497035.pdf
    • https://cdn.sqhk.co/zefadanexa/UONDgjG/steps_involved_in_risk_management_process.pdf
    • http://wubowobipevoto.mywebcommunity.org/61407033390.pdf
    • https://cdn.sqhk.co/pilozarager/gfij2Kl/jisugorul.pdf
    • http://tuwimig.scienceontheweb.net/dovumexazixilunu.pdf
    • http://chestlune.online/fexelitusabanejajcy8hj.pdf
    • http://nuvagefo.medianewsonline.com/barrier_free_design.pdf
    • https://cdn.sqhk.co/zeterabaxax/Ajajfja/juvoraw.pdf
    • http://daddytestit.xyz/what_is_the_most_important_part_of_writing_a_professional_emailhkm06.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://roxujewov.myartsonline.com/read_the_apocrypha.pdf
    • https://s3.amazonaws.com/vonutavekip/parigitisozofabuwel.pdf
    • https://s3.amazonaws.com/saziwijaxodav/honda_eu1000i_generator_review.pdf
    • https://s3.amazonaws.com/julaxel/excel_spreadsheet_template_for_coin_inventory.pdf
    • https://s3.amazonaws.com/pidufozu/hdfc_ergo_general_insurance_motor_claim_form.pdf
    • https://s3.amazonaws.com/dutuzanob/agerigna_keyboard_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da19.bin
37de5730e1686c7f25ccf4735106c308f4e2a7a65aaa27c92e750ff062245a9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 21080 bytes
font_01_sfnt_off0001180e.bin
fa2b3baca3b617db06ae950db19b3bb3e779cab670e7bfcd7288af479e4a6648
pdf-font-stream PDF embedded font (sfnt) at offset 0x1180E 5684 bytes
font_02_sfnt_off00012b69.bin
8b5613250520a53a3609d56ab0a3f0e3f18694c5a6059ff8de6f2c6a7923a59b
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B69 10672 bytes