Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a6d534cd7d1fd5…

MALICIOUS

PDF

88.4 KB Created: 2021-03-30 22:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 6afd9714e2a8352089cdab2accb79ac6 SHA-1: 285c013a3496033d6b002a54014c470a3bb35ff7 SHA-256: 03a6d534cd7d1fd520bf6ad7995e6129df74c6092b1d2b8fbd7d1c6c26641995
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://jacksth.ru/123?utm_term=template+powerpoint+2010+lucu PDF link annotation
    • http://pixxel.life/14666625036fndsb.pdfIn PDF document text
    • http://subejewumo.scienceontheweb.net/68052391666.pdfIn PDF document text
    • http://deflecfcvy.best/22145869204lxqpq.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/tracfone_lg_journey_lte_phone.pdfIn PDF document text
    • http://jepewadagamer.scienceontheweb.net/how_to_pray_to_ancient_greek_gods.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_604aa2d9eb682.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/11706396506.pdfIn PDF document text
    • http://mainsale.info/capillary_blood_gas_normal_values_ukyylxh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448556/normal_6062c8c0ee6b5.pdfIn PDF document text
    • http://euromarket.pro/what_are_the_visual_indicators_of_sinkholesbsya5.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/gafixomikituwanuriw.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/vagukuremagurozemezimoxziog3.pdfIn PDF document text
    • http://insurancecarusa.com/asus_rt-ac68u_dd-wrt_vs_merlin0vwew.pdfIn PDF document text
    • http://impergamon.com/916652109754ym7w.pdfIn PDF document text
    • http://vazagitomis.mypressonline.com/bienestar_psicologico_en_el_adulto_mayor.pdfIn PDF document text
    • http://gufutaca6.xyz/xinumukolu6ocfu.pdfIn PDF document text
    • http://ziximotizaned.medianewsonline.com/lovufaminoxotemuzizaw.pdfIn PDF document text
    • http://zawukinaloluku.sportsontheweb.net/.pdfIn PDF document text
    • http://dududuw.mypressonline.com/how_to_use_uverse_remote_to_control_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_6014451f2a09a.pdfIn PDF document text
    • http://vitalia-transports.com/tawavajutotx4vb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kijonag.onlinewebshop.net/acid_rain_essay.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/73475286065.pdfIn PDF document text
    • http://susabumo.atwebpages.com/jilexakubepi.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_off00010e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E92 5148 bytes
SHA-256: 82427392cf08dd1166e8fdda8a4fc78e574d27cdd236acdfff04f17b960aca17
font_01_sfnt_off0001200e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200E 10676 bytes
SHA-256: a2ab4e68588826f8f582db63274240920c89de44f0a5d3af2e0ee25b55f46dc5
font_02_sfnt_off00014465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14465 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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