Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7200721debc0c66…

MALICIOUS

PDF

89.6 KB Created: 2021-04-11 05:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7083b4d277cca987fbf62c5ee93c5ed4 SHA-1: 1713ba73c9348b450eac465347b58e82292d4281 SHA-256: c7200721debc0c66a8ab8962dd8c4c7b1c00e5f8625cffe7bf80d6e3550df7cf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'resalured.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, contains text fragments that suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://resalured.ru/strik?utm_term=what+you+rather+questions+dirty
    • https://cdn-cms.f-static.net/uploads/4388407/normal_6040af356efb5.pdf
    • https://cdn-cms.f-static.net/uploads/4386361/normal_604cebeaaf9cf.pdf
    • https://cdn.sqhk.co/befozaxulot/hjaGijx/new_ringtone_iphone_download_mp3.pdf
    • http://botefedej.sportsontheweb.net/b7_bolt_torque_table.pdf
    • https://cdn.sqhk.co/nadetajagupe/Ghcjdjj/fivadebasaji.pdf
    • https://cdn.sqhk.co/velovezem/ihgiajn/walkthrough_beyblade_2020_burst.pdf
    • http://lightly.store/wunozebalugitagmrca1.pdf
    • https://cdn-cms.f-static.net/uploads/4448538/normal_60172b57f3aaa.pdf
    • https://cdn.sqhk.co/kagaxavog/hitnNhc/sve_sto_znas_o_meni_tekst.pdf
    • http://fumuroruzej.medianewsonline.com/gukutukamuxotipupobusaw.pdf
    • http://copyright-supporthelp.com/lanius_cruiser_guidezl82m.pdf
    • https://static.s123-cdn-static.com/uploads/4481985/normal_60027fdfc0801.pdf
    • https://cdn.sqhk.co/xaselavub/MIhjbhj/jifedinebejobaritapowo.pdf
    • https://static.s123-cdn-static.com/uploads/4475588/normal_5ffe26d3d5a39.pdf
    • http://lelekelosutov.getenjoyment.net/sudevokosijivek.pdf
    • http://helpverifybadges.com/vivolowiry493r.pdf
    • http://lnstagramcentre.net/sanimuxokewazopendi07e.pdf
    • http://bexemusu.mypressonline.com/banking_services_chronicle_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://goxojerodumofag.epizy.com/how_to_clean_black_and_decker_waffle_iron.pdf
    • http://giduzorim.epizy.com/37199729108.pdf
    • https://s3.amazonaws.com/zetubakuz/60618238029.pdf
    • https://s3.amazonaws.com/bewibiwat/32233302071.pdf
    • https://s3.amazonaws.com/bifamomove/xixotegagubupigolodut.pdf
    • http://vajavilodufolix.epizy.com/fuzoratisiwos.pdf
    • http://futikuzita.onlinewebshop.net/kapuloxotizefidotakidabuz.pdf
    • https://s3.amazonaws.com/kopisigapub/free_audacity_software_for_windows_xp.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_off000120b4.bin
0a9ed82f7f968f710d0cb3c9384efb412de4f66113fada144aae871203338938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120B4 5120 bytes
font_01_sfnt_off00013227.bin
9ca68339b49dccb1ba1467c4645bfe52ee7fcab3d789727ef888881dab2d83ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13227 10904 bytes

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