Malicious PDF — malware analysis report

Static analysis result for SHA-256 0945530a9c08ff6d…

MALICIOUS

PDF

81.2 KB Created: 2021-04-02 19:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a00e22e1f028aebf6cb30d08e156d55 SHA-1: b1420078522b8b175a30cd6a55b20fb3952bc845 SHA-256: 0945530a9c08ff6d929036e9b8d2c3e3381c889df85b42e156a2222aee332428
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://dafemum.ru/strik?utm_term=is+gasoline+a+class+1a+flammable+liquid
    • https://cdn.sqhk.co/batumozi/AghVfhg/jowawudi.pdf
    • https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/2764315.pdf
    • http://pressit.fun/vekuxutademoxuq9w6z.pdf
    • http://usacreditscore.info/how_much_would_a_nintendo_2ds_sell_forguhoj.pdf
    • http://businesslinecenter.com/brother_mfc-495cw_printer_manuali8fge.pdf
    • https://static.s123-cdn-static.com/uploads/4479222/normal_5ffc7172a7280.pdf
    • https://cdn-cms.f-static.net/uploads/4495858/normal_60505b49c4daa.pdf
    • https://cdn.sqhk.co/zanaforare/YBjcggh/mcdonald_s_menu_calories_and_fat.pdf
    • http://wamipigobabi.22web.org/redimezaxojexasigexojivi.pdf
    • http://desekikimok.22web.org/bmat_registration_form.pdf
    • http://limecash.xyz/physics_for_scientist_and_engineers_8th_editionc4g7l.pdf
    • https://cdn.sqhk.co/bevurokakug/jqojbTp/70054864001.pdf
    • https://tufizesux.weebly.com/uploads/1/3/4/5/134596030/metezema-gafosokuzez-gapukalamuwinef-wubas.pdf
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/rabalexilanudurel.pdf
    • https://cdn.sqhk.co/folikulezig/k1dujgX/precalculus_conics_parabolas_worksheet.pdf
    • https://cdn.sqhk.co/nodezaneripe/icqibhf/graphic_design_software_for_t_shirts.pdf
    • http://salebox.shop/music_sheet_symbols_and_meaningwpacy.pdf
    • https://cdn-cms.f-static.net/uploads/4420434/normal_60430a1536489.pdf
    • https://cdn-cms.f-static.net/uploads/4370064/normal_601bb4858f89e.pdf
    • http://pusuwanoxanopo.22web.org/ps4_emulator_for_pc_32_bit.pdf
    • https://cdn-cms.f-static.net/uploads/4401540/normal_603e6d7866181.pdf
    • https://koropiliful.weebly.com/uploads/1/3/0/7/130740252/4448290.pdf
    • https://kimiligemapi.weebly.com/uploads/1/3/4/3/134343210/godizopedutula-morowom-vipajotivonan-napinosejolam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://putotapuzavip.rf.gd/cfg_to_chomsky_normal_form.pdf
    • https://254b3b0b-79dc-4992-827c-fd4bb3db3178.filesusr.com/ugd/f515ca_b0224824fccd4e79a6f3b115ac2a5fad.pdf?index=true
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_d4d1b2c976854f08adf4fd142bf95d23.pdf?index=true
    • https://f50ece36-1901-4a7b-9396-968a400df7f4.filesusr.com/ugd/3ecb95_cb3000774ebc4f28954de7a40a59766f.pdf?index=true
    • https://7a512b58-7189-4bc4-8343-f643fa9054c9.filesusr.com/ugd/1e52da_933f96a102364e22847b3d148e6c08b7.pdf?index=true
    • http://foduwisidowej.rf.gd/macbeth_analysis_questions_and_answers.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_off0000fcdf.bin
7fad5d1846a2f09631a6070be0b987263338728c57e1e1a84146a0cab716bbe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDF 5500 bytes
font_01_sfnt_off00010f88.bin
d5022e897944516f13dfb986f23a08cab240afebf6566d04bb8e558538f3ec4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 11536 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.