Malicious PDF — malware analysis report

Static analysis result for SHA-256 8960e20cfc21cdfa…

MALICIOUS

PDF

79.6 KB Created: 2021-02-27 12:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7fb11e4270f1696752f8f05a1611393e SHA-1: a5e7ecb0e727cafe934875fc7f556808f91a9cba SHA-256: 8960e20cfc21cdfa08891e825ae66ae65716e98550a387dac749679e9f7d1cfd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware-hosting site. The document body, though heavily obfuscated, suggests a lure related to a book title, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=hyperbole+and+a+half+book+buy PDF link annotation
    • https://cdn.sqhk.co/letaziseb/hficifP/54267082252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366402/normal_5ff3c2791f901.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/KiaRjjU/funny_animal_pictures_with_quotes_for_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/5yjggeI/electric_circuit_breaker_panel_directory_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/YaUhhbw/restaurant_tycoon_cooking_game_mod.pdfIn PDF document text
    • http://circus.market/sopobigepugor63lw.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/biggjeR/79889733594.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/icnJicX/paint_sprayer_for_cabinets_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/ctgcieJ/super_adventure_world_jumpstart.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416304/normal_5ffba2989e23e.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/2JnpWZ1/bewatimanej.pdfIn PDF document text
    • https://cdn.sqhk.co/vedasukuki/jcijhb5/wefinosoluw.pdfIn PDF document text
    • http://creditscorehelp.info/lufejigumiraxudigevonim05my.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/jiOibjf/kaderalamuxulutakupuge.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/echo_pb-250ln_carb_adjustment.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/alfabeto_aeronautico_en_espaolxp76f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nejesezape.myartsonline.com/nikon_d400_price_uk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED87 4972 bytes
SHA-256: c41f376f0fa4a94211193318a5fe44b29198cc668daf77a1ce5b64bc6efd097e
font_01_sfnt_off0000fe53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE53 10856 bytes
SHA-256: dbe2006b56d38d541bd003dc72ea5d137efb343652cc8e441851d032682f8814
font_02_sfnt_off0001237b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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