Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5300fb0d9dd2b1…

MALICIOUS

PDF

65.7 KB Created: 2021-02-27 08:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ac75ce941fcff4591187fb56b7d35213 SHA-1: a35b7c969294e24f67c4dcfa2988cc617f2f45e0 SHA-256: 7e5300fb0d9dd2b14619c40cc0e0739b729f1fe3af671a115d6b872b99b2f2f2
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=waiting+meme+skeleton In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_6014532b4353f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fc6d7bfd399d.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/38177989257.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/87049187843.pdfIn PDF document text
    • http://cloudplay.xyz/771727596344wy8w.pdfIn PDF document text
    • http://saluzoz.iblogger.org/medical_report_for_nysc_sample.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/6d96fe805dc3583.pdfIn PDF document text
    • http://tekdouche.xyz/31463004908o3fzr.pdfIn PDF document text
    • http://laxetatisitu.iblogger.org/15055341567.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/7885568fb832.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/what_is_the_marvel_movie_chronological_order.pdfIn PDF document text
    • http://nimened.66ghz.com/4421849696.pdfIn PDF document text
    • http://vas-rem.ru/12_days_of_christmas_lyrics_meaningoiwjl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bikoguxutova.rf.gd/write_a_letter_asking_for_more_information.pdfIn PDF document text
    • http://viladitotaxuf.epizy.com/gm_diet_plan_day_3.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_off0000c299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC299 4988 bytes
SHA-256: c02f294f5ec4b6462f61d1e037ca61712ecdc7af9b4e1261b0eab9f6fc5c4d96
font_01_sfnt_off0000d397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD397 11900 bytes
SHA-256: 65715354356fe382ef4770bca19e180b9cb431da307437f7498ba83b1f93514b