Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c47e25720df178…

MALICIOUS

PDF

78.0 KB Created: 2021-02-28 06:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0efd00f08c1c9f18cfc95adf68011f96 SHA-1: 3579f1d67308c56d2264329355247c824085fbb8 SHA-256: e2c47e25720df1787b80040505aa18d4f1e17d93ab5f30001f6ab5556331261c
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with one specifically pointing to a site that appears to be a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to search terms, suggesting a phishing lure to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/wix?keyword=city+of+toledo+bulk+trash+pickup PDF link annotation
    • http://salonlabs.xyz/my_system_profile_uconncbi7b.pdfIn PDF document text
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/59b704f.pdfIn PDF document text
    • https://cdn.sqhk.co/rewagujil/igepigi/russian_masters_table_tennis_scores.pdfIn PDF document text
    • http://dadevizevarek.scienceontheweb.net/how_to_cure_an_oster_roaster_oven.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/kunigedavalizu_vobajoleginexag_zinidituj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385204/normal_5ff7e6885c3cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419002/normal_5fcbb3a066349.pdfIn PDF document text
    • https://welukixavise.weebly.com/uploads/1/3/1/0/131069839/lumikitozapis_ripunulawav.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/aSigUbD/top_score_writing.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/ib611ih/cadre_meaning_french.pdfIn PDF document text
    • http://artrosil.xyz/warren_buffett_letters_to_shareholders_2020bxdzy.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/nerumogajemikekanijeba.pdfIn PDF document text
    • http://jarewitof.mypressonline.com/40956752255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5fd2d27496617.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/graphic_design_portfolio_examples_reddit.pdfIn PDF document text
    • http://procripton.com/205838588151i0k8.pdfIn PDF document text
    • https://povewagefafede.weebly.com/uploads/1/3/4/8/134888055/ronarubadujebabemij.pdfIn PDF document text
    • http://kigumelez.medianewsonline.com/56671418822.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/43222994366.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/20230490062.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nununad.myartsonline.com/excel_vba_range_find_multiple_criteria.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/98677422669.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_off0000f4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AB 5452 bytes
SHA-256: ae7f5ff355aae520e08783b6f21ed82805350ba96a7cd240982e44582d743b7a
font_01_sfnt_off00010730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10730 10264 bytes
SHA-256: 84f330e300694a09cc49f7dd228dd127eb33aecd81b56824fcaabd2ee10d50c6

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