Malicious PDF — malware analysis report

Static analysis result for SHA-256 292981564b055148…

MALICIOUS

PDF

84.7 KB Created: 2021-03-21 10:35:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d75e76e56e7f52e1d27f4edd82cd7294 SHA-1: 7803e6581f2fa6a7bda310adab2d530322ac927f SHA-256: 292981564b055148b5bbc98b1db817d1fbdda48e0091e909e93f0702246f9796
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being 'https://zajinet.ru/123?utm_term=bambukat+2016+movie', suggesting a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack, likely a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/123?utm_term=bambukat+2016+movie
    • https://cdn.sqhk.co/fowonawex/diei3jb/terranova_bakery_multigrain_pizza_dough.pdf
    • https://cdn.sqhk.co/wevexifimur/01cTcje/world_voicemail_review.pdf
    • https://cdn-cms.f-static.net/uploads/4464539/normal_604ebd015673e.pdf
    • https://static.s123-cdn-static.com/uploads/4485823/normal_600825c7d64fc.pdf
    • http://nenodipemuxok.mypressonline.com/ensayo_argumentativo_sobre_el_aborto_completo.pdf
    • http://nemagufi.mywebcommunity.org/diccionario_filosofico_herder.pdf
    • http://supariwepexafat.mywebcommunity.org/asrock_z77_pro3_m.2.pdf
    • http://kogutojoveso.mywebcommunity.org/xixekox.pdf
    • https://cdn-cms.f-static.net/uploads/4384655/normal_6016cd691227e.pdf
    • https://cdn.sqhk.co/pabelemusib/jEoKdia/61002455402.pdf
    • https://static.s123-cdn-static.com/uploads/4382781/normal_5ff9967bdd7dd.pdf
    • https://cdn.sqhk.co/riwifesineji/biajihi/easy_business_accounting_software_free_download.pdf
    • https://cdn.sqhk.co/vibisidumes/ifFjagj/palpitation_heart_rhythm.pdf
    • https://cdn-cms.f-static.net/uploads/4384030/normal_6056e3e78ed82.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mubemutolewe/91423140948.pdf
    • http://xiwexuxe.atwebpages.com/94304234506.pdf
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_004c6401635d4a0db13d4d6c3d7bf612.pdf?index=true
    • https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_0cc27558571b49bcb2f6d35e466e88f8.pdf?index=true
    • https://s3.amazonaws.com/jenagubadopi/rainbow_vacuum_parts_near_me.pdf
    • https://s3.amazonaws.com/zakunafu/insect_glaive_combo_guide.pdf
    • https://s3.amazonaws.com/susonanezaj/votisovabokajulumebipager.pdf
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_1d2467d659fa41f7bf3852da47ecaed1.pdf?index=true
    • https://s3.amazonaws.com/tisegovofu/memisovomatidowavaj.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f637.bin
71db22c083c2551d28051d69a3110dd9f1bc851f6a30f6b0e579d11f6d4c0578		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF637 5316 bytes
font_01_sfnt_off00010854.bin
c1884547b3e881e8c9268956039539a17e5c73c0c061f5ebf8cf864c9b10d2e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10854 11624 bytes
font_02_sfnt_off0001300d.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1300D 16164 bytes

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