Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e68bf4c0c954775…

MALICIOUS

PDF

90.7 KB Created: 2021-03-24 11:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ce855a285dd2f5e1e767b749401aa10 SHA-1: d20145141ccb729a57300a3df184b69552d0992c SHA-256: 5e68bf4c0c95477576a17acd58ada2b1d1ed6bdb0f93dcdd1dc78d8a1b17bda3
116 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the presence of external URIs and a callback phishing lure, suggesting the document is designed to trick users into initiating contact for fraudulent purposes. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=indulgence+pillow+warranty
    • https://cdn-cms.f-static.net/uploads/4383929/normal_601a719c2c2c6.pdf
    • https://cdn-cms.f-static.net/uploads/4467032/normal_6012578e6b8ba.pdf
    • http://spoonnumberone.xyz/purple_martin_birdhouse_plans86qnq.pdf
    • https://cdn.sqhk.co/riroxale/hghgjhg/47404238838.pdf
    • https://cdn.sqhk.co/votezevon/jhRidif/xutemokadusexifoxozom.pdf
    • https://cdn.sqhk.co/jinatopa/hezjehe/sure_shot_gun_range_nc.pdf
    • http://nidavisopuxabu.iblogger.org/56639842693.pdf
    • http://copyrightnotices-form.com/navy_seal_fitness_test27o3x.pdf
    • https://cdn.sqhk.co/sebixodof/6phahj3/definitely_not_duck_hunt.pdf
    • https://static.s123-cdn-static.com/uploads/4484636/normal_60098700ce0ab.pdf
    • http://dixajadabaw.66ghz.com/bararotisepamoduvopari.pdf
    • https://static.s123-cdn-static.com/uploads/4376852/normal_5fde1ac3524c7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://petovajudavo.rf.gd/95812193447.pdf
    • http://dixolasafu.epizy.com/ayushman_bharat_scheme_details_in_tamil.pdf
    • https://uploads.strikinglycdn.com/files/ec6fc7a3-c403-4233-a747-5bb26a085412/how_to_set_clock_timer_on_boiler.pdf
    • http://zadaxuro.rf.gd/lutipalusifix.pdf
    • http://beruraxawiloga.rf.gd/best_mifi_modem_malaysia.pdf
    • http://jofesosozofoso.epizy.com/zipata.pdf
    • http://datonojafasaxup.rf.gd/un_barrage_contre_le_pacifique_incipit.pdf
    • https://uploads.strikinglycdn.com/files/bb9d6a40-143f-4335-957e-502d879b64e8/82090547684.pdf
    • http://puwagof.rf.gd/kotawapuludu.pdf
    • https://uploads.strikinglycdn.com/files/b9bf16ab-e596-4cc3-a91e-a257be773024/33529582986.pdf
    • http://renebizokav.epizy.com/43179484520.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_off00012398.bin
06eefa9de677fac85586dbe963095bb75f7c3b70eac5b1d284080e27a4d9eef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12398 5192 bytes
font_01_sfnt_off0001356d.bin
a490af8fab8b1aa6b410e4497d247a659e49b52b1de8614a118d1c3469096875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1356D 11336 bytes

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