Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c581eb0859483e…

MALICIOUS

PDF

72.6 KB Created: 2021-05-13 03:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70814b49937ed6d57b18cd3f3079da10 SHA-1: 2f72d61f001cdd92b4557625c36313d1f7e12d92 SHA-256: c1c581eb0859483eb80cf4918b3391e57f12bd1011b15ccaaec53e2ceb4270cf
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The primary URL, 'https://dafemum.ru/strik?utm_term=accu+chek+performa+strips+and+lancets', suggests a phishing lure related to medical supplies. No scripts were extracted, but the presence of multiple URLs and the high risk score indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/strik?utm_term=accu+chek+performa+strips+and+lancets
    • https://cdn.sqhk.co/muvetowiripa/ahThhzL/81157652819.pdf
    • http://tramlaweq.online/libro_de_auditoria_contablejiky1.pdf
    • https://cdn.sqhk.co/nogorodizet/g4kJ2S7/jasper_reports_freeware.pdf
    • http://ro-shop.space/71891477695xd9oc.pdf
    • https://cdn.sqhk.co/kulobuwaxegu/apyjWP4/zukuputasonesiduga.pdf
    • https://cdn.sqhk.co/lilaxikixo/0gfibfc/lafixugi.pdf
    • http://fulokixowo.scienceontheweb.net/64840248905.pdf
    • http://liketime.fun/warhammer_fantasy_battle_6th_edition72m0u.pdf
    • http://sale20.site/marley_and_me_trailer_2o3s1i.pdf
    • http://lofoporubatul.mygamesonline.org/pdf_akuntansi_pemerintahan.pdf
    • http://xokubenafap.66ghz.com/root_browser_for_android_2._3.pdf
    • http://barcaporirternet-interbank-pe.com/wfrp_character_sheetacw45.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://savexopuzasi.epizy.com/accelerated_learning_techniques_for_students.pdf
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_767a509276a14077a9ace428562307be.pdf?index=true
    • http://mifofofavu.rf.gd/ncleo_caudado.pdf
    • https://c09438b0-f1cf-4ade-afa2-d322e048c450.filesusr.com/ugd/313cc6_cf19d7caa87045998f99d0ea784834d1.pdf?index=true
    • https://8f1ef4f7-3f23-41ef-a3d6-4e5873a175a2.filesusr.com/ugd/d318ce_a351fa718dc44b6782a064b60bd1abad.pdf?index=true
    • http://jaxudemavi.epizy.com/abscesso_cutaneo_tratamento.pdf
    • http://losajumener.rf.gd/biosensors_market.pdf
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_bbd44ed121dc44d1809dfcc350847383.pdf?index=true
    • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_d6bdd49226514b0dac669592999e0de1.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cedf.bin
664b05a8c8ee5090357b925b792b8873b44191214e2eae52e3e69a4380826ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDF 5332 bytes
font_01_sfnt_off0000e0d2.bin
2d33f854fbf6e9d8a55b0e44e51ff6eaf60fc8cadd78119030616f827daad5a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D2 10684 bytes
font_02_sfnt_off00010522.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10522 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.