Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f343633d7cc64d…

MALICIOUS

PDF

76.5 KB Created: 2021-03-29 09:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0c0814d0180a21aa812c71c5519080c SHA-1: e7997b00e850cb16a1dd688a26f8b1467735b77d SHA-256: 84f343633d7cc64d17f0d9fe99aab7533f9d5839eca2917fab7cf0dacbe7e4b2
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to a URL that appears to be part of a phishing or scam campaign, disguised as a software upgrade offer. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/wix?keyword=cyberlink+powerdirector+14+upgrade
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/tosugiwixovafi.pdf
    • https://cdn-cms.f-static.net/uploads/4368752/normal_6060f0168972f.pdf
    • http://rubitadix.22web.org/traitement_de_l_acidoctose_diabtique.pdf
    • http://diwejibazetar.iblogger.org/how_to_use_ipad_in_classroom_teaching.pdf
    • https://cdn-cms.f-static.net/uploads/4366958/normal_60601b1a05078.pdf
    • http://vonurejawata.iblogger.org/16792576575.pdf
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5ff57cce9018f.pdf
    • https://cdn-cms.f-static.net/uploads/4402933/normal_601bad60bc79a.pdf
    • http://shoes-storie.club/logitech_h600_vs_logitech_h80060g1d.pdf
    • http://mejikisevupepen.iblogger.org/spdr_euro_stoxx_50_etf_fact_sheet.pdf
    • http://furniture21.online/rizipunkhafj.pdf
    • https://static.s123-cdn-static.com/uploads/4450516/normal_5ff32659c500e.pdf
    • http://pigexavenume.iblogger.org/mathematical_biology_murray.pdf
    • http://msertis.xyz/p3_international_kill_a_watt_ez_meter_reviewdb39j.pdf
    • https://lenonexijinex.weebly.com/uploads/1/3/4/6/134647177/ef00fe57a4c.pdf
    • http://gupupokuvugal.22web.org/pod_x3_live_price_india.pdf
    • http://tryici.xyz/physics_formula_for_initial_velocityrchtv.pdf
    • http://itasda.online/831234056545dakg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c4aa9438-1cb9-40aa-bccf-6dfc00ccd0c9/lifecycle_stationary_bikes_sale.pdf
    • http://jazoxuxorilule.epizy.com/tuxijupowakasumejuw.pdf
    • https://uploads.strikinglycdn.com/files/6c3118c7-cdb7-46ef-8fb5-2205794e189c/html_css_website_design_tutorial.pdf
    • http://tuwojusedikemi.rf.gd/42928619975.pdf
    • http://tudibakigar.epizy.com/sabosabujekoxoxivaxu.pdf
    • http://japenuwefi.rf.gd/63786671414.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_off0000ec92.bin
abbd715dd9598a8637530393b1e376132c31787e6d19a1328d9331129e3f1131		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC92 5508 bytes
font_01_sfnt_off0000ff84.bin
0887e903f9d8ff395e1acc2a5cfa2f904421c39cdef337f7cf8928438c7c891b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF84 10412 bytes

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