Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9dae96a8941eb92…

MALICIOUS

PDF

203.1 KB Created: 2021-03-19 19:07:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9eeb51a881cde0104f9fc53ff9db4c0b SHA-1: 66f73c20aee70d70be542ae18e32d3f02dc9f1e3 SHA-256: a9dae96a8941eb922c9fe601d5ff0a9a3266c8142c091267606a35c208514cdc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as a webquest answer key. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or phish for credentials. No scripts were extracted, but the presence of a malicious URL within the document body is a strong indicator of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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://midufefew.ru/wix?keyword=history+of+life+webquest+chapters+4.1+25+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377113/normal_5fcbde0661b6e.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/dqtpsih/binev.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/UYfPjfr/64910021963.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388067/normal_6007f3ed0c243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382772/normal_600dcc31ce390.pdfIn PDF document text
    • http://pubggaming.online/stihl_electric_grass_trimmer_reviewjyths.pdfIn PDF document text
    • http://wersita.fun/how_to_update_my_american_megatrends_biosziots.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/whbEhbd/36042541575.pdfIn PDF document text
    • http://websecurer.tech/bellman_cx-_25_manual6nxiu.pdfIn PDF document text
    • http://loxebosobudi.66ghz.com/35113323605.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/fjhuGQ7/lenovo_fm_radio_app_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wajinevisu/cigchfq/first_year_books.pdfIn PDF document text
    • http://flowerport.market/pathfinder_healer_oracle_guiden784y.pdfIn PDF document text
    • http://luminar4-download.xyz/nafigofomikpsf8s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vibibedoxoxi.epizy.com/48183898969.pdfIn PDF document text
    • http://gatutob.rf.gd/whitfield_pellet_stove_manuals.pdfIn PDF document text
    • http://dakozel.epizy.com/62901242072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef7cf4a6-2a16-410c-b112-e903e2ac21e3/sennheiser_rs_170_power_supply.pdfIn PDF document text
    • http://wepukuxazej.rf.gd/72876279068.pdfIn PDF document text
    • http://suvubojetixag.epizy.com/simapurafil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03763b72-6acf-42e0-b093-326bdebbed1a/pitaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce239b5-38ac-4034-8541-6afc763cb310/cloud_atlas_2012_cast.pdfIn PDF document text
    • http://kejijisutova.epizy.com/goxenovibagur.pdfIn PDF document text
    • http://ludoxijijux.rf.gd/rezofusevagija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7b83eb-d48f-4077-8f23-1630da003cd4/how_to_reset_check_engine_light_nissan_sentra.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002db4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB4D 5952 bytes
SHA-256: fbed37141b960a5fd95de586afd17645276c400633e22569d63e03050b195eda
font_01_sfnt_off0002efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFBE 14492 bytes
SHA-256: 546b344f5e1b59d3a513700de6852b5fa37c80a9982f94857ac658a99cf5b69c

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