Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e04b56e4df7832c…

MALICIOUS

PDF

101.5 KB Created: 2021-03-20 22:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9f37a6f217231b948fa8eeb3bcba5471 SHA-1: 9c3a488aa14b75c2bf7a35f9a6d34a6ac096bdff SHA-256: 0e04b56e4df7832cf19cce2263d17218480d022560891fd3c7aea6076dca5db1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://gimoguvi.ru/strik?utm_term=save+the+cat+novel+genres PDF link annotation
    • http://kozidozilujivox.getenjoyment.net/voselikadomaduk.pdfIn PDF document text
    • https://pogiwubuwafax.weebly.com/uploads/1/3/0/7/130775808/luvate.pdfIn PDF document text
    • http://siondez.ru/dbx_driverack_pa2_manual_espaol9a05c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483331/normal_6051f27b9b9a0.pdfIn PDF document text
    • http://inostrana.com/how_to_set_up_vivofit_jr_2rbzpm.pdfIn PDF document text
    • http://usene.xyz/1492804197exem5.pdfIn PDF document text
    • http://all-casino.xyz/jetiladegalgivw.pdfIn PDF document text
    • https://xoxopazivufa.weebly.com/uploads/1/3/5/3/135398299/4935918.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/54974915018.pdfIn PDF document text
    • https://pumujeguda.weebly.com/uploads/1/3/5/3/135330988/sibugelijogitoxaton.pdfIn PDF document text
    • http://vojemodipu.sportsontheweb.net/samsung_smart_tv_remote_control_bn59_manual.pdfIn PDF document text
    • http://legiontry.online/abdus_salaam_chaus_books5nt7h.pdfIn PDF document text
    • http://wugupomovupa.sportsontheweb.net/amc_10b_2018_cutoff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459165/normal_5fc681ce98341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417530/normal_5fca70cf2d72f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_603d5a5582468.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/mapa_mudo_mundial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_604b62182f6a1.pdfIn PDF document text
    • https://jumirugefof.weebly.com/uploads/1/3/3/9/133997886/9574185.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/80626599323.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/94921655634.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/widetunipet/buy_fitted_sheets_online_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/maperiwisavaro.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_off00015025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15025 5224 bytes
SHA-256: d6755ced25d6596b4867146e38854c4e592150f66e864e8cd876b8d5ff4f8a68
font_01_sfnt_off000161eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161EB 11488 bytes
SHA-256: 3e7f887c6d0bd15383dc1baf2080acbd738f3fe4bda719c9607267a7e6930cb1

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