Malicious PDF — malware analysis report

Static analysis result for SHA-256 481031cc6a53e028…

MALICIOUS

PDF

82.8 KB Created: 2021-03-22 18:37:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 509ccfcda4bc111055172558f4eb3f63 SHA-1: d8359665eb9b2a52788fc9c5c4233a2d64915765 SHA-256: 481031cc6a53e0280c1fdf6f1af0513f2d63c1cdf94b1c58d2d825f8f39758aa
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the document content suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/aws?utm_term=how+to+use+a+rival+deep+fryer
    • https://cdn.sqhk.co/runudori/ghfzBt9/92916531186.pdf
    • https://cdn.sqhk.co/xorilulog/hdYmhcu/realistic_cake_artist_near_me.pdf
    • http://wwwbcpzonasegura-viabcp.com/sosezakgoemu.pdf
    • http://strgb2.ru/61565373326jsof7.pdf
    • http://pasendapp.online/are_there_any_bison_left_in_americatki86.pdf
    • http://eliyalte.com/livusurajutezipo7df.pdf
    • https://cdn.sqhk.co/razilipot/giiaLid/taganofuvawikigopigo.pdf
    • http://ledy66.net/81440655617193by.pdf
    • https://cdn.sqhk.co/renosopezare/kyjjhja/20596867522.pdf
    • http://lollipopa.online/besigidafofm78s6.pdf
    • http://lnstagram-blue-ticks.com/dell_optiplex_3010_sm_bus_controller_driver_for_windows_72xhq7.pdf
    • http://cooldomen.space/zejekafotofiz5q9h.pdf
    • http://unlockdeals.shop/49868713911300bc.pdf
    • http://copyrightnotices-form.com/dononelukanajigatozafojyol6.pdf
    • http://excschool.ru/79586169045jzsx7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_d51e07bc44d1415bbd6387955deb0d5b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cac557ab-db8a-422a-8a67-5248bb6ffc98/nec_national_electrical_code_nfpa_70.pdf
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_82d353b1d0504af99d198ff1b9873fba.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e6667650-b5b4-426f-8848-40fc693a7094/46224473689.pdf
    • https://c3d762b3-5d50-4891-ab6d-43710edd2423.filesusr.com/ugd/3254bf_e3fa828f01ab4e188285d1929d8e73db.pdf?index=true
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_e99915afefe04c95a45eda0ed590b6cc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3145fb78-f892-427c-aa81-93172996524e/xuwisidapodulelef.pdf
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_d83e60752eec4ab6bb98febef97c5f43.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9b5d7e24-afe3-4616-be30-fd87551ef28e/22326589122.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_off00010679.bin
474540355dd3b6fc0de88859f5d39ad10428ec05b13a9b778a1e10a02bfe0d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 5252 bytes
font_01_sfnt_off0001187f.bin
91d31458ca1b92b3fb1b49d3711c326fb5e9bbb2288215218fa22a499e4a8a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1187F 10616 bytes

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