Malicious PDF — malware analysis report

Static analysis result for SHA-256 2825e2098a52fefd…

MALICIOUS

PDF

75.9 KB Created: 2021-03-27 10:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 472956a4d8f83c113e47c572e24d60ed SHA-1: c1748d4411cde4240e9d587523367b717b0268c5 SHA-256: 2825e2098a52fefdc0c422712477510c72087871ef8c6cbdd3742aaee43e8721
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. The embedded URL, disguised as a book title, likely leads to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=quran+reading+and+writing+book+1+pdf
    • http://gojoges.iblogger.org/20137135380.pdf
    • http://simopuvoramawu.mywebcommunity.org/company_letterhead_format.pdf
    • http://nigoguno.scienceontheweb.net/muburiwodigegifobatal.pdf
    • http://mutinujevax.22web.org/facebook_messenger_apk_4._4._4.pdf
    • http://lerasusakibura.22web.org/wezesa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zitovidenelanus.rf.gd/tavonediraritamibizuzu.pdf
    • https://uploads.strikinglycdn.com/files/18f9b8f7-f260-47eb-b384-b913275f25d9/dalozokudemoxunimafewole.pdf
    • https://s3.amazonaws.com/getizar/39785093436.pdf
    • https://s3.amazonaws.com/tobaziw/84153485898.pdf
    • http://ginarokexaf.epizy.com/jewozage.pdf
    • http://reweteliwak.epizy.com/health_sanitary_inspector_books_gujarati.pdf
    • http://fegizopanawu.epizy.com/can_i_schedule_my_drivers_test_online.pdf
    • https://uploads.strikinglycdn.com/files/92a8e751-62ee-47ef-8a33-a3cbf7444454/52587374714.pdf
    • https://18e7ef82-5c75-44fe-ae22-4c356c2c9ce0.filesusr.com/ugd/749e61_11b6a321e9944898a75ccdec4f7f5ca1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c7a7b813-b875-48e3-831c-1e03f872ca1d/how_to_do_an_istikhara.pdf
    • http://rokidibamufoduv.epizy.com/topilom.pdf
    • https://s3.amazonaws.com/retisovojor/oecd_transfer_pricing_guidelines_2019.pdf
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_59c4090d0b5c478eadb1a24833852f36.pdf?index=true
    • http://xutenasejubibe.atwebpages.com/fouling_factor_in_heat_exchanger.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_off0000eb2d.bin
d11252c05b30b8c3311ff8dd4a84b8cc741d83b0ab25c33060c9e1916286f199		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2D 5408 bytes
font_01_sfnt_off0000fdb6.bin
f17de4eb0dfe559716207ed7cf1442cd42ffc57e4234bee1d0f20cf504e63a6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB6 10844 bytes

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