Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5eff5f3924da5a…

MALICIOUS

PDF

68.6 KB Created: 2021-02-15 03:25:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 11d93b32eb52e7b3a78608b0aa8cc31d SHA-1: d0e41f49093669d463c24d15f3e68e55bb8e72c0 SHA-256: 9a5eff5f3924da5a75ab21242b2e4d7e948f12f6e46bc7ce946539667c968802
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=co+cultures+examples PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453326/normal_5fe572c88db40.pdfIn PDF document text
    • http://auto-fishing-rods1.club/fluval_405_canister_filter_manualwf428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382004/normal_5fe5b2516c87f.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/iwhgghE/32272333542.pdfIn PDF document text
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/tivogigisati.pdfIn PDF document text
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/c17919aedfc3b7a.pdfIn PDF document text
    • https://cdn.sqhk.co/kerodamajop/v2hjevO/crazy_bike_racing_stunt_3d_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449193/normal_601c7d000a256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464710/normal_5ffbe69587fd6.pdfIn PDF document text
    • http://osummer.space/42583112785dqz5z.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/dTRAwjO/rewarupol.pdfIn PDF document text
    • http://gratoraama.space/20425466347fgiyp.pdfIn PDF document text
    • https://sufudavinor.weebly.com/uploads/1/3/1/3/131381021/kimididafibebemixuf.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/1787026.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/biiRidN/dictator_2016_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/ziiS5WF/91212911768.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://matogojetize.rf.gd/dosowul.pdfIn PDF document text
    • http://nifopufu.epizy.com/interest_rate_swap_agreement_template.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_off0000d0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F4 5052 bytes
SHA-256: f8ba88baf58eac69832f17dfe94ed9be783efa69d033833fd529afd872a9271c
font_01_sfnt_off0000e20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20A 10412 bytes
SHA-256: bc853de0f20974882cbecc10f48eeeabe307febcff5b3553693e850d5cdc52e8

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