Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe61832b662927b…

MALICIOUS

PDF

81.2 KB Created: 2021-05-10 10:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a8556d900bbcd8715be98b3f7c140f1b SHA-1: 716270b6af54eb24b5f846f48b1c159c8e445770 SHA-256: 3fe61832b662927b36297e1eb393b7f2c445006b193df1e264fc54480ebbd49a
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, including one pointing to 'ponafet.ru', suggesting it's designed to redirect users to phishing or scam sites. The document body, though heavily obfuscated, contains text related to poker, likely a lure to engage the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/strik?utm_term=how+to+do+blinds+in+poker PDF link annotation
    • http://lenugaguv.medianewsonline.com/behavioural_theory_of_personality.pdfIn PDF document text
    • http://cz-nitrof.website/folders_report_utilityo8qww.pdfIn PDF document text
    • http://italywow.space/towabupibosarodcue1w.pdfIn PDF document text
    • http://jibesikore.iblogger.org/bacilos_gram_positivos_en_orina.pdfIn PDF document text
    • https://cdn.sqhk.co/kasunelebak/7hj7ijM/racing_kart_parts_parolin.pdfIn PDF document text
    • http://recepty-dd.info/susaluvusegawazukoloexqva.pdfIn PDF document text
    • http://paxosij.mygamesonline.org/maths_book_for_class_6th.pdfIn PDF document text
    • https://cdn.sqhk.co/vatepasoxi/heQh5dV/board_of_directors_in_corporate_governance.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/idSJhf1/learn_spanish_through_english_free_download.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/download_psiphon_pro_handler_apkqphix.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/gjZhbwv/taxisavixuxijivunuwuwajek.pdfIn PDF document text
    • http://wejafopag.mypressonline.com/borehole_drilling_process.pdfIn PDF document text
    • http://luwepetewegumot.iblogger.org/3717464778.pdfIn PDF document text
    • http://duzusedolatepe.mypressonline.com/75250782611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_d9dbf26d51dd422bbdb372c810530953.pdf?index=trueIn PDF document text
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_471993242d2541548464efadf3c94c9e.pdf?index=trueIn PDF document text
    • http://piserujirabubam.epizy.com/wigetojatamimajoxisoj.pdfIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_1f960c1651a042bab969a53cbd871118.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d36a86a-dd93-4215-b1c3-550e89fd9bb8/how_to_set_a_total_line_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14419420-a53d-4371-8b78-cfcc9385118c/jelijeritajowufosovurelu.pdfIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_f238bac88ce041848667a3b3f12bc4b0.pdf?index=trueIn PDF document text
    • http://sejekaxupoze.epizy.com/47115454705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80a69b57-6fca-487a-9cb9-e1c16dc6204c/eyelash_extensions_training_houston_tx.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE7 5000 bytes
SHA-256: 5581b50425585cc7b2b6f33a1b3c1a37bd23d579b356e850892b80291bd1be2d
font_01_sfnt_off00010e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E01 12024 bytes
SHA-256: 47d74bfbbe51c77fbbac1b422614f718b94e8e0cbd95e792c1a6e56583243e5f

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