Malicious PDF — malware analysis report

Static analysis result for SHA-256 e312954986c022ee…

MALICIOUS

PDF

73.4 KB Created: 2021-03-21 23:32:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 545bfa0395ab6c31615f8eeedcc04efd SHA-1: 7ab89579cee83095eff722522b23122ac13239a7 SHA-256: e312954986c022ee4a497c852b26708208af5b6e8a34c44cfc7d73130f124d16
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 for 'Pdf.Phishing.Trojan'. The document contains numerous embedded links pointing to external domains, suggesting a phishing or malware distribution attempt. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm strategy on disposable hosting, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=car+eats+car+2+hacked+unblocked
    • http://suporefebakibur.mygamesonline.org/abzurdah_descargar.pdf
    • http://tapozifokun.mywebcommunity.org/40754254113.pdf
    • http://gagivukamuw.getenjoyment.net/luwekalogemop.pdf
    • https://cdn.sqhk.co/zizenozi/cO4iggh/best_music_player_for_windows_10_paid.pdf
    • http://wemuwetafivaxe.sportsontheweb.net/rafadozekijegipur.pdf
    • http://fosipuzo.mypressonline.com/56642637874.pdf
    • http://bemelegevew.22web.org/11570008515.pdf
    • http://mutetufowikujib.22web.org/cen_tech_portable_power_pack_how_to_charge.pdf
    • https://cdn.sqhk.co/ponesigis/Uxhc6ia/free_live_tv_apps_uk.pdf
    • http://kixurox.getenjoyment.net/62041814316.pdf
    • http://xojitufos.66ghz.com/nta_answer_key_2019_neet_odisha.pdf
    • https://cdn.sqhk.co/vowogada/idjaNwW/tigo_py_roaming_internacional.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_c85110f726424ccfb73e6158cd1dc68f.pdf?index=true
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_6d73bd2f9c284e659152ee72bd228ba1.pdf?index=true
    • http://wutesejib.onlinewebshop.net/15351785034.pdf
    • http://panulanupujudun.epizy.com/verithanam_video_song_lyrics.pdf
    • https://36d3fe4d-ce77-4ecd-ae21-04b42370c250.filesusr.com/ugd/871c54_dc82ec5ec3b74a7e8f0093d4b63a1a56.pdf?index=true
    • http://pobiludorigogok.epizy.com/49515046852.pdf
    • http://ramedilasu.rf.gd/como_hacer_una_propuesta_tecnica_de_un_proyecto.pdf
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_4cc976127bef436bb5eece0bbfcebcf5.pdf?index=true
    • 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_off0000e1c9.bin
19871fa100679f429691f4bc03d0c8d2ab9bcde5cae3d05ac07516e71cde3e33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C9 5268 bytes
font_01_sfnt_off0000f3a3.bin
6ee1c3a5b730d676ac54edbb58401c4b268578432213c7d616aafce2670074c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A3 10892 bytes

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