Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52d0b558c712b1d…

MALICIOUS

PDF

82.1 KB Created: 2021-06-09 21:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05b6a30c2ca4ed0b1de912cd92fe1248 SHA-1: c3a6d9c477a471db2e5da45f681f1e69f7f42ba7 SHA-256: e52d0b558c712b1d0b2c4c751df18eaee1f587c2cb68cb56786b0a5a2a00513e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further payload 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://zajinet.ru/wb?keyword=life%20skills%20training%20program%20pdf
    • https://static.s123-cdn-static.com/uploads/4502268/normal_5fe1786d9c6d3.pdf
    • https://cdn-cms.f-static.net/uploads/4368467/normal_60ba53cc332ad.pdf
    • https://cdn-cms.f-static.net/uploads/4369150/normal_6033805f03239.pdf
    • https://cdn-cms.f-static.net/uploads/4450038/normal_606ae139bca66.pdf
    • https://cdn-cms.f-static.net/uploads/4365613/normal_60450ab15383f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9cc4888d-5548-460b-9204-d0094624fecd/mini_dv_tape_player_converter.pdf
    • https://uploads.strikinglycdn.com/files/284b194f-0a51-4fad-b444-1c41e93bf534/turn_off_google_maps_timeline_iphone.pdf
    • https://uploads.strikinglycdn.com/files/bf8d0854-243d-4253-a8ba-5d4aeceb26b7/51354322778.pdf
    • https://uploads.strikinglycdn.com/files/dbb64219-9e91-43a1-9890-9612b9e70c8f/56843088404.pdf
    • https://uploads.strikinglycdn.com/files/af3775ef-0b54-449b-97ac-6ab28ae0b6ff/23341659928.pdf
    • https://uploads.strikinglycdn.com/files/1ee45940-a61a-400a-8fa0-86ef7382e38e/ge_mac_5500_hd_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/15a07c8b-bc43-4a13-b4b9-52be1c89a349/dragon_age_origins_romance_guide_leliana.pdf
    • https://uploads.strikinglycdn.com/files/f33df283-1125-4875-842f-152dde9f368f/mejor_libro_historia_de_las_religiones.pdf
    • https://uploads.strikinglycdn.com/files/57fbde8d-4b97-412c-9687-156e3eb4bc7d/mazadikakim.pdf
    • https://uploads.strikinglycdn.com/files/a553762f-332f-456f-ae70-d252c797ecd0/how_to_get_miracast_for_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/efddba3a-6a45-409c-a1cb-6e24cc2e479f/irs_2019_schedule_3_instructions.pdf
    • https://uploads.strikinglycdn.com/files/7c5a1172-0ba8-42f3-9e97-90ac1da41d54/vanagok.pdf
    • https://uploads.strikinglycdn.com/files/a6907346-1777-4e58-ba40-d4de81b36f9e/how_to_get_a_cdl_with_hazmat_endorsement.pdf
    • https://uploads.strikinglycdn.com/files/c830bd9b-ca03-49cd-b46c-6d2ca0b3460f/puwisus.pdf
    • https://uploads.strikinglycdn.com/files/d8b88532-f31f-4574-9750-f954ac5d9edb/tusasigakamikuzozok.pdf
    • https://uploads.strikinglycdn.com/files/351bd17b-e61c-4109-b280-00569d437308/kemiligejinowuzijoluv.pdf
    • http://mibegenav.pbworks.com/f/naming_carboxylic_acid_worksheet_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/3e627cc9-eded-481b-a38f-fee4e6f54291/tiwetafopamisebamudomisi.pdf
    • https://uploads.strikinglycdn.com/files/7d43effe-632d-4d05-9980-52c3d13e8c58/the_paleo_approach_by_dr_sarah_ballantyne.pdf
    • https://uploads.strikinglycdn.com/files/f165676f-d839-4e0f-87e9-17936cfd4546/crepax_story_of_o.pdf
    • http://zabodovojif.pbworks.com/f/cuisinart_food_processor_dlc_7_pro_manual.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_off0001025e.bin
c32c87d03c564a55446dfe9a250c1fe0f9db82f4578298bfceb5c485ca9a8626
pdf-font-stream PDF embedded font (sfnt) at offset 0x1025E 5368 bytes
font_01_sfnt_off00011493.bin
6cb6b37580d70f422e85d102dbff1a61f992a5f7cefc8de7e4aaa4245e2442e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11493 11264 bytes