Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ecf24449c1dee2…

MALICIOUS

PDF

78.2 KB Created: 2021-03-29 23:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c76fd4dbf8d51463456f0fae535bbd01 SHA-1: 77ebd73cc4e109aeccb942dbbd65fbb7c79eccde SHA-256: f2ecf24449c1dee2b04dfd4ad1152e3e042359af55ff20dd3c33024e72b5c4a9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to zajinet.ru, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'trail map pdf'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=long+island+greenbelt+trail+map+pdf
    • http://igclienteam.com/easy_keto_meals_for_beginners3arox.pdf
    • https://sizuginoten.weebly.com/uploads/1/3/4/4/134490660/xasexumabonefe-litebujakirat-fijafow.pdf
    • http://chambrehub.xyz/scout_uniform_badges_leaders52l91.pdf
    • http://jirafka.space/73311056226k8b0s.pdf
    • https://cdn.sqhk.co/vaxizavex/gjihicI/amplify_curriculum_answers.pdf
    • http://lodomujimujug.mywebcommunity.org/ascaris_suum_in_pigs.pdf
    • http://pedron.fun/how_to_register_marriage_in_india_if_married_abroad8akoz.pdf
    • http://grafoanaliz.ru/topobilisanetomuwazigun5nhzn.pdf
    • http://nojigopagapusu.mygamesonline.org/nokudomeke.pdf
    • http://mavedelusudefiv.22web.org/wunaluriguzufemivakubu.pdf
    • http://sixesijilolun.mywebcommunity.org/suicide_notes_book_quotes.pdf
    • http://xudowalovafu.iblogger.org/how_many_calories_are_in_a_taco_bell_bean_burrito_fresco_style.pdf
    • http://sq11mini.com/vilodunikovoxisajobvyntd.pdf
    • http://virona.org/sidosavepotukoe8r7v.pdf
    • https://waderiraxobo.weebly.com/uploads/1/3/4/5/134505054/jewijelis-mafifer-diwomal-keperugezujeb.pdf
    • https://cdn.sqhk.co/rifokinimito/WJhgNN1/little_fox_animal_doctor_download.pdf
    • https://salabupomisopef.weebly.com/uploads/1/3/4/6/134631393/jipega.pdf
    • https://kutowovazamil.weebly.com/uploads/1/3/4/3/134362820/saraken.pdf
    • http://classkaod.ru/grid_photo_maker_for_instagram_mod_apk7mfrk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kimatun.epizy.com/tanuzokusopezizutevegav.pdf
    • http://pabewuvuxaf.onlinewebshop.net/monsta_island_czars_rodan.pdf
    • http://nodufezazu.epizy.com/broadcasting_script_sample.pdf
    • http://mujaxeb.rf.gd/varepezikamobipa.pdf
    • http://wovibojo.onlinewebshop.net/telatadoxotevubin.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_off0000f3b4.bin
8242b8268dbb67f74474e7f41455fcf6adf633b56caf390b1fcb8ae78b347134		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B4 5444 bytes
font_01_sfnt_off00010621.bin
d42e582e19f2da4f9fc82883c7079b311f740c9f454916be345e32abcdc53c4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10621 10860 bytes

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