Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b2c052f78e831d…

MALICIOUS

PDF

76.3 KB Created: 2021-04-01 05:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08e12d512f574a8c8c3a5f71f19fde2c SHA-1: c0873e6833cb29d1774b0c4f3c9a8e35bc9c8446 SHA-256: 32b2c052f78e831d687996815b39a135c32024b45b9e97944d7e8a70bbc74fda
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a phishing or trojanized PDF. The embedded URL, https://dugedepap.ru/award?keyword=carrying+capacity+adalah+pdf, is the primary indicator of malicious intent, likely leading to a phishing page or malware download. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit PDF viewers or trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

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://dugedepap.ru/award?keyword=carrying+capacity+adalah+pdf
    • http://pinerapidsrr.com/suzuki_sidekick_lift_kitf36b5.pdf
    • http://kengoru.space/love_stickers_for_whatsapp_emoji_gif_wastickerappspj0jf.pdf
    • http://online-bestshop.xyz/sudopagjgt7s.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/setigafat/debriefing_sheet_example.pdf
    • https://uploads.strikinglycdn.com/files/d6bff924-7c80-4b89-a2e0-b57383ffaeb9/que_dia__o_domingo_de_ramos.pdf
    • https://uploads.strikinglycdn.com/files/8105d964-9771-401b-b851-6449882a6e0b/atf4_transmission_fluid_gallon.pdf
    • https://uploads.strikinglycdn.com/files/c532365e-d36c-4225-8ac3-a57ce2af4b91/zefirupozix.pdf
    • https://uploads.strikinglycdn.com/files/239679a7-0524-497e-93d4-a8b0bd6b5fab/dell_u2715h_max_resolution.pdf
    • https://uploads.strikinglycdn.com/files/46c97c3f-5e87-4d0f-b724-f9782525a19f/what_is_30_by_40_in_square_feet.pdf
    • https://uploads.strikinglycdn.com/files/980d2e8e-a06c-4983-921a-7ed718b5a0bc/nasekimidibamulikok.pdf
    • https://uploads.strikinglycdn.com/files/f8dee033-8129-48cb-8fd5-456ce5e0a43c/75607744142.pdf
    • https://s3.amazonaws.com/mefonevimimix/36043332863.pdf
    • https://s3.amazonaws.com/fatikonavori/wupexumavubapetalesirepak.pdf
    • https://s3.amazonaws.com/tufujifinobiro/gezomebajuxes.pdf
    • https://s3.amazonaws.com/medaliwifufugel/wordly_wise_3000_teachers_resource_book_3.pdf
    • https://uploads.strikinglycdn.com/files/d43667ad-3c20-4b4b-9856-5c204de35778/fofelesufum.pdf
    • https://uploads.strikinglycdn.com/files/cc7eef56-ba24-46c3-89d6-b3bcf41a794b/the_way_of_the_sufi_idries_shah.pdf
    • https://uploads.strikinglycdn.com/files/79783ddc-11d6-4847-a371-79c457ae0921/an_sin_ti_-_los_hijos_de_sanchez_ao.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3fd.bin
a8044b7bd08d63cd57669e03cbd109deeeb9fb93723c8e861d537c73b75ab5f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FD 5244 bytes
font_01_sfnt_off000105d6.bin
5ef587210683ab6f6d07086b2b1010853729147cf382fcb226177f1ea056b875
pdf-font-stream PDF embedded font (sfnt) at offset 0x105D6 11488 bytes