Malicious PDF — malware analysis report

Static analysis result for SHA-256 318f4e5520bb287a…

MALICIOUS

PDF

71.7 KB Created: 2021-02-26 01:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2c5269c79fb3e498d9991afa2c682413 SHA-1: 707eb7b52fa365b615fd5f6a1e0e6e69beec289b SHA-256: 318f4e5520bb287a2a79d982820ce68e5019cdf9ed1cc10a6f3e582f1b0a9aa4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=why+not+more+percy+jackson+movies PDF link annotation
    • http://wejowadizabudex.mypressonline.com/the_sense_of_an_ending_movie_free_download.pdfIn PDF document text
    • https://luvofebujapima.weebly.com/uploads/1/3/0/9/130969865/bivonajiri.pdfIn PDF document text
    • https://basavorulifa.weebly.com/uploads/1/3/4/8/134899730/jevuwakisu_tamoneduzexo.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/icthbid/78155279346.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/cigagex/luwenit.pdfIn PDF document text
    • https://piwofenuxud.weebly.com/uploads/1/3/1/8/131871692/laxepemas_mirojukitosipu_jenafosi.pdfIn PDF document text
    • https://zudamuberul.weebly.com/uploads/1/3/4/8/134854759/c71a413d8.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/kXiaRZV/72996054317.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fc886cfcf573.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://givimuvupavu.epizy.com/philips_whirlpool_fridge_freezer_manual.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/37693128889.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/what_is_the_deprivation_of_liberty_safeguards.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_off0000dcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC4 5456 bytes
SHA-256: 718b1e13864414056adbfb8ff7065e555e932c36261901b4639d066daeb798ae
font_01_sfnt_off0000ef42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF42 10212 bytes
SHA-256: dbd94d3c05fff977bb4cf449a3072f7a9176c73a9ebfe4444f8f15ce6ae5e436