Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7a88d4c9b98867…

MALICIOUS

PDF

113.7 KB Created: 2021-03-02 20:25:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f8a6498bc8ce1bce5f2cd77369301d1b SHA-1: 5a901d4df177f6037f50b651a61ed8773022fb28 SHA-256: 0d7a88d4c9b98867940c5b1db83ca6c6ec2e706bfec5c6cfed31b030d9d71af5
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs pointing to disposable hosting and link farms, suggesting a phishing or malware distribution scheme. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the PDF is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/award?keyword=what+do+punctuated+equilibrium+mean PDF link annotation
    • https://cdn.sqhk.co/mifodirula/hbgdjm0/roblox_factory_simulator_script.pdfIn PDF document text
    • http://mastera-saydinga.ru/samsung_galaxy_s9_date_de_sortieuwm79.pdfIn PDF document text
    • https://cdn.sqhk.co/tenalewi/goqhjaL/audio_pro_drumfire_vs_sonos_play_5.pdfIn PDF document text
    • https://kigovedinefetup.weebly.com/uploads/1/3/1/3/131384362/438241.pdfIn PDF document text
    • http://the-english-temple.com/457616641138in0r.pdfIn PDF document text
    • http://dududuw.mypressonline.com/shakespeare_sonnet_48_meaning.pdfIn PDF document text
    • https://fujulisu.weebly.com/uploads/1/3/4/0/134042697/pefufezumo_wilev_laxagub_pidaz.pdfIn PDF document text
    • https://wikifepum.weebly.com/uploads/1/3/3/9/133986434/vubinulinefuji.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/when_did_schools_shut_down_for_covid_2020.pdfIn PDF document text
    • http://zathkatow.xyz/42379714203cuujo.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ZJhPjbr/omni_notes_sync.pdfIn PDF document text
    • http://verifiedbadges-form.com/weferebejozujogaselimos6cdt.pdfIn PDF document text
    • https://fabisinutufonos.weebly.com/uploads/1/3/5/9/135993578/noxomuvevilu.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/raxisarijimotugez.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/bgi0NzA/67520365261.pdfIn PDF document text
    • http://vuwimoxit.mygamesonline.org/13050728653.pdfIn PDF document text
    • http://site-shop.xyz/gotaxuweos3pt.pdfIn PDF document text
    • http://com-connexion.xyz/woxunivajofujuwetowobur8geu2.pdfIn PDF document text
    • https://kigazodiraju.weebly.com/uploads/1/3/4/6/134678535/8471573.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/kaliwojijejut.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_off000166ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166EA 7892 bytes
SHA-256: 0d82ef0080b0aa88ae9f7d5dd100e0a1ea9828ab495f44c089dd141f8dcd0218
font_01_sfnt_off00018110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18110 5416 bytes
SHA-256: 0af187247eaee4d3ce77427aac56552d07febf6723481e03be98a68b3b4acbdd
font_02_sfnt_off00019353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19353 10980 bytes
SHA-256: 286e72bb135ed30433d06c6e6d221415bf097d4a87f171a7c83c9b28f10637d7

Open this report in the interactive analyzer, or submit your own file for analysis.