Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a5dce5288db559…

MALICIOUS

PDF

79.8 KB Created: 2021-04-06 19:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d75d932adcc895f512810d47e2bef1bf SHA-1: 4c4271d72ee5c3fb33412dcd17852969ffe67fb5 SHA-256: 80a5dce5288db559f2472436156d20997ce96f44a4c3032b03e16f01089cb6b7
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Gto thyristor pdf', suggesting a phishing or social engineering attempt to drive users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=gto+thyristor+pdf
    • http://thedefenseforge.com/xusebogutawiwukap9zp2.pdf
    • http://zodatowafe.getenjoyment.net/a_d_and_d_a_converters_in_microprocessor.pdf
    • https://fujerituzaxu.weebly.com/uploads/1/3/0/7/130775231/45b791aa176ae.pdf
    • http://xasumemazekejo.scienceontheweb.net/jisinuxibejebatibure.pdf
    • http://vetovikaxu.mypressonline.com/16209796398.pdf
    • http://cloudplay.xyz/xikomixulepidetogonjvq8d.pdf
    • http://vexasefagi.scienceontheweb.net/animal_anatomy_books_for_artists.pdf
    • http://lomilinixigal.mypressonline.com/child_care_and_protection_act_2020.pdf
    • http://tometifo.getenjoyment.net/human_geography_meaning_in_hindi.pdf
    • https://mibuvenatevuwo.weebly.com/uploads/1/3/4/6/134607329/fofosuzamotuti_pamifomasuxade_kidonetew.pdf
    • http://xejebowipuzusim.iblogger.org/endorsement_letter_template_word.pdf
    • https://ridulimozujigo.weebly.com/uploads/1/3/4/1/134109280/245788.pdf
    • https://rilavowa.weebly.com/uploads/1/3/2/7/132740415/nowoguzes.pdf
    • https://dapobirot.weebly.com/uploads/1/3/4/8/134888013/4180056.pdf
    • http://esclick.pro/790831647875otq3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vorisenunajix.myartsonline.com/how_to_replace_drum_cartridge_xerox_d95.pdf
    • http://dojidusajotat.epizy.com/zepazuwizi.pdf
    • http://judafigot.rf.gd/gopopesorupataroxaba.pdf
    • http://zikefibuji.rf.gd/83325910680.pdf
    • http://naxesabefadufu.atwebpages.com/angiografia_abdominal.pdf
    • http://pokezuturev.rf.gd/chicken_invaders_6_pc_full.pdf
    • http://julajibumomas.rf.gd/logic_questions_with_answers_and_explanations_tagalog.pdf
    • http://fijoramobizedej.epizy.com/28294987119.pdf
    • http://gakilasefit.myartsonline.com/despacito_alto_sax_sheet_music.pdf
    • http://gapifemesi.rf.gd/gorupusumo.pdf
    • http://muvamubas.atwebpages.com/lajub.pdf
    • http://dolumuvi.rf.gd/baixar_netflix_apk_android_4._4._2.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_off0000fbe1.bin
b0d1341ace98f7ae76c16b93520eacf57564b3be029e63e703548898e9a336a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE1 5020 bytes
font_01_sfnt_off00010cfc.bin
5be63461b9e2b9c7da55f092cbeafe22b54b48668022f470e184504def99964b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFC 10692 bytes

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