Malicious PDF — malware analysis report

Static analysis result for SHA-256 e005ed4097230928…

MALICIOUS

PDF

109.9 KB Created: 2021-02-22 11:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6418c8d22cac8253af8661785198d725 SHA-1: 2eecd95d126ed2dc34621f39e0ffc2750d733abb SHA-256: e005ed40972309285478483187e82f2a05d6158a0c83a379df86745af5fbb20f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is a PDF containing numerous embedded URLs, many of which point to disposable domains and are structured as link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or exploiting vulnerabilities. The document body, though heavily obfuscated, contains references to 'The Handmaid's Tale' and application metadata, possibly as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=the+handmaid%2527s+tale+movie+1990+online PDF link annotation
    • http://tehnotop.site/zugokomejugawezu4p029.pdfIn PDF document text
    • http://spainwow.pro/letorojp4y.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/gyhxhgl/five_nights_at_freddy_s_2_song_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/gedXjc9/12374373574.pdfIn PDF document text
    • https://cdn.sqhk.co/vaziworab/ggjXL4S/56094791298.pdfIn PDF document text
    • http://heliusdesign.ru/9174886963yedej.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/h1gf07T/8825279359.pdfIn PDF document text
    • http://reduslim-official.website/play_tubes_at_rock_creekh0c16.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/njgRgiY/bajuriguzurukajatukebuxij.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/f7jhgdM/sajawuwusilupikudutateg.pdfIn PDF document text
    • http://mekapetakosa.22web.org/zumodifuxojiwabugage.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/z4uib8q/dungeon_survival_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedure/apex_launcher_pro_3._3_3_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/ccna_tutorialspoint.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/vusedijum.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/96470407594.pdfIn PDF document text
    • http://fosoxubap.epizy.com/55612975024.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_off00016e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E10 5360 bytes
SHA-256: 5ec3fe6e2838fe030039b59959804f43a9a1241406b94c2dab4c93f1a69a2a6e
font_01_sfnt_off00018033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18033 12416 bytes
SHA-256: 66d9505ed151737e148e6170426cd8a961b35b9cce9fdaa68aff2ebf7cf89ade

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