Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d85b2b19837c1f…

MALICIOUS

PDF

81.0 KB Created: 2021-03-31 04:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02dc1a26fb089e06125b56225c5ec08f SHA-1: 7874230d1fa52e511961bd47739eceb136ff3d24 SHA-256: 47d85b2b19837c1f727c7773e5ac5a86d6733fcb28a747f6c657d4812d57021b
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary suspicious URL pointing to a domain associated with phishing. ClamAV detection and ML classification strongly indicate malicious intent, specifically a phishing campaign. The PDF structure and embedded links suggest an attempt to redirect users to a compromised or malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/wix?keyword=ri+docket+search
    • https://cdn-cms.f-static.net/uploads/4384633/normal_6025097d65864.pdf
    • http://gasolotiravizid.sportsontheweb.net/lugorudagomabiralilubul.pdf
    • https://cdn.sqhk.co/sivadapexiri/07jhgi2/71165943439.pdf
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5fdaf11c2d43e.pdf
    • http://sotipidikukunow.getenjoyment.net/clinical_trials_handbook.pdf
    • https://cdn.sqhk.co/totarujined/jehjge6/affordable_bed_sheet_sets.pdf
    • https://cdn-cms.f-static.net/uploads/4498868/normal_600e7d1809651.pdf
    • http://lololoj.sportsontheweb.net/zifebizojaluwi.pdf
    • https://cdn.sqhk.co/nozujeraguje/7icgejc/bound_for_freedom_book.pdf
    • https://cdn.sqhk.co/gujowaxexag/0UzhehF/play_tube_video_tube_baixar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f171294f-ed7a-4884-a773-1e826a512430.filesusr.com/ugd/20d861_3076844b5f394bf793c4e93d5f55c250.pdf?index=true
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_83d3fe118b63454abaea9641f2056da8.pdf?index=true
    • https://6d0c6d30-55b9-4b7f-8145-34d11b484ddf.filesusr.com/ugd/8db56d_17c8703141e84ca3a74cd091000ca5ab.pdf?index=true
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_1da4f4b8f18c444096a2e485b6701e07.pdf?index=true
    • https://uploads.strikinglycdn.com/files/74d6580f-62ff-479d-b2ba-c673c84593e5/m5a97_r2.0_bios.pdf
    • http://dapibudajemuk.atwebpages.com/amharic_bible_english_translation.pdf
    • http://zewadomi.myartsonline.com/denube.pdf
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_6a13da21d4c94bd1af7b6735278cadbc.pdf?index=true
    • https://ddb281da-11d2-423e-b83a-408ecf1f607f.filesusr.com/ugd/9db61c_d395a427f3b944678c5024d9937acbe6.pdf?index=true
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_d43f3b7b40904be8b9e21e4ae2f60176.pdf?index=true
    • https://uploads.strikinglycdn.com/files/43e28198-797d-46b3-b9e5-84f5d940d627/46211657672.pdf
    • https://uploads.strikinglycdn.com/files/6d95ade6-5d37-4bce-92d5-af184444a34c/how_to_clean_samsung_dishwasher_drain_filter.pdf
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_e914c3909b434f3587d302a519174537.pdf?index=true
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_cd9262514dbd424380981c2330688c6a.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_off000100c7.bin
9bcd1eab87069281c282cc03021749f4f02d9e1038ffa3bbb12bb94fff54475c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C7 5064 bytes
font_01_sfnt_off000111fe.bin
ea1f3da0a68c82c33595ec7e96d417299f09026d5fb7002ea43d0a1bdf4c10f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111FE 10792 bytes

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