Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3bb4e12a7641a3…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 13:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ffe04d0539cc0b7c42b969fb2b3557e4 SHA-1: 3073272f0f2efeeba7d6e2e814f72e1bcac07d1b SHA-256: 1c3bb4e12a7641a3aaa18f32de5e87b74ba7cfe69ee8d95ed5550637359b0819
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wix?keyword=magic+duels+tips PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5fdcc35c5c8f3.pdfIn PDF document text
    • http://wosatonosefenaw.iblogger.org/18464867068.pdfIn PDF document text
    • http://arenaprobet.com/tasupusevegilomav9zvc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_601dbe3236430.pdfIn PDF document text
    • http://donbetosstreettacos.com/73332860948yichp.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/luvifikigebexo.pdfIn PDF document text
    • http://shtangye.xyz/biblia_catolica_73_librosnfbwt.pdfIn PDF document text
    • http://parrrtner.xyz/vomigapubit4fpf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383449/normal_5ff70a82dcf1b.pdfIn PDF document text
    • http://dvigatel.guru/forex_for_beginners8gfms.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/the_crown_season_3_episode_8_wikipedia.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/2014_maserati_granturismo_sport_convertible_for_sale.pdfIn PDF document text
    • http://raffle.website/megosubanivaboniqvs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubiluwetij.myartsonline.com/giwolujajug.pdfIn PDF document text
    • http://gopogawamo.rf.gd/remember_me_coco_trumpet_sheet_music.pdfIn PDF document text
    • http://titugol.atwebpages.com/87107260050.pdfIn PDF document text
    • http://gefuxexo.epizy.com/zozesijezos.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_off0000e820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE820 5148 bytes
SHA-256: 2b549a1d7973d2f03a6557cde71a666aea64fa21202cfecc358e484dd8f2e944
font_01_sfnt_off0000f9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C8 10248 bytes
SHA-256: 41ff99a6d68ed9a3a34cf03254ec1049414ccf72a6382eaa0b5eb4f68d7557e5

Open this report in the interactive analyzer, or submit your own file for analysis.