Malicious PDF — malware analysis report

Static analysis result for SHA-256 d798f45da3a7035d…

MALICIOUS

PDF

74.2 KB Created: 2021-03-06 12:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c939110e7ed437cdd0179003d2b59f34 SHA-1: 97a139c9218678331d34e124b16002cf4d4489d5 SHA-256: d798f45da3a7035dc39cc04b194e7952699e27bee0e65e8a2522bdd0bbddeb9a
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/123?utm_term=kenmore+french+door+refrigerator+ice+maker+removal
    • http://titoto.xyz/midstream_college_school_uniformjuolb.pdf
    • https://cdn-cms.f-static.net/uploads/4476925/normal_60303e837e2f9.pdf
    • http://xipelosowux.22web.org/union_plumber_salary_oregon.pdf
    • http://arm-watch3.club/asp._net_gridview_bootstrap_templatestz29t.pdf
    • http://gatorama.site/wajukefukizuraxobulejaog7df.pdf
    • https://cdn-cms.f-static.net/uploads/4421354/normal_5fd7cb08db7bf.pdf
    • https://static.s123-cdn-static.com/uploads/4413374/normal_5ff52f83a62b9.pdf
    • http://damita.fun/xojarokekavuvenurivodamiziy4w6.pdf
    • http://eurozone.pro/hampton_bay_flush_mount_ceiling_fan_instructionswhdl9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f82379fc-e529-45c2-82c9-d76324517f0f/should_you_read_throne_of_glass_or_assassins_blade_first.pdf
    • https://uploads.strikinglycdn.com/files/9f03fbd7-37a4-486e-a052-3c35a69fe861/49137658522.pdf
    • https://uploads.strikinglycdn.com/files/2f15ad4e-c962-40ef-9057-a66d50ff9ff2/battletech_game_wikipedia.pdf
    • https://uploads.strikinglycdn.com/files/1c6625c5-91e5-4b03-bb8e-8a55beb5c3a0/53033380055.pdf
    • https://uploads.strikinglycdn.com/files/415c7e49-f5ad-4a21-9324-47a0ba8a85ca/adobe_photoshop_for_book_cover.pdf
    • http://pexifapiko.rf.gd/14480328269.pdf
    • https://s3.amazonaws.com/suxugipipolazog/unix_shell_script_loop_through_lines_in_a_file_list.pdf
    • https://s3.amazonaws.com/siwixomudit/56050578770.pdf
    • https://s3.amazonaws.com/vebisop/vocalise_violin_sheet_music.pdf
    • https://s3.amazonaws.com/gapivegek/salvation_army_christmas_assistance_wilmington_nc.pdf
    • https://uploads.strikinglycdn.com/files/2e6372ac-ed3d-4bcb-a633-55b16ef91807/much_ado_about_nothing_joss_whedon_cast.pdf
    • https://uploads.strikinglycdn.com/files/1555e4bc-fd74-403d-af14-394117990440/jizerosinoperaso.pdf
    • http://muzubakow.epizy.com/degejewolewewigovane.pdf
    • https://uploads.strikinglycdn.com/files/ef6cd3de-ce2b-4afc-8bfd-00b3357e3807/32115373050.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_off0000e4e9.bin
78585b2a7d7dfe2c82b594fe7ba7dad5d919f33a205c0be3ee1dfd5fd85027fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 5348 bytes
font_01_sfnt_off0000f6f9.bin
b9d77d0da5c125ea7a52b78975ab811c2b78a30bb3912ed693ebf57e33c4ebf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F9 10480 bytes

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