Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca813d5fa179600…

MALICIOUS

PDF

75.4 KB Created: 2021-03-05 09:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e7ce598808b06b13fe365aee49e03362 SHA-1: 9bb7868f0b12fad0a1b36dbe8c9a6bb4b8c3fcbf SHA-256: 6ca813d5fa179600dbcd927298411441891b7bfaab56b013ac9e7e937b8a81ab
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 0.9995

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://zajinet.ru/123?utm_term=first+6+cube+numbers PDF link annotation
    • http://feedbacrnz.space/dokerotoxebelabujewunl4v9i.pdfIn PDF document text
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/33673d.pdfIn PDF document text
    • https://sibotapitagota.weebly.com/uploads/1/3/4/3/134378411/jojejagata.pdfIn PDF document text
    • http://mihetos.xyz/9928853411736or3.pdfIn PDF document text
    • http://mx50off.pro/the_soul_of_basketballg4ksn.pdfIn PDF document text
    • http://reestr.site/shimano_sizing_chart_shoesx5vl8.pdfIn PDF document text
    • http://tryplafond.xyz/mamiya_rb67_lens_adapterh1mzv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374853/normal_5ff2fe8695b25.pdfIn PDF document text
    • http://businesslinecenter.com/15766826177shsze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527108/normal_601120e251b56.pdfIn PDF document text
    • https://nifevokore.weebly.com/uploads/1/3/1/4/131437532/dafuwomijopisuko.pdfIn PDF document text
    • https://vufumepuzatine.weebly.com/uploads/1/3/5/3/135335191/koluguxifalebig.pdfIn PDF document text
    • http://conicppjry.bid/18720908955jof5s.pdfIn PDF document text
    • https://surugodinatuv.weebly.com/uploads/1/3/4/8/134861851/fikenapexu-lusunin.pdfIn PDF document text
    • http://psylath.com/73303026301ujwxp.pdfIn PDF document text
    • http://belplitka.ru/jimudowamumutohcncu.pdfIn PDF document text
    • http://salonvarna.com/fundamentals_of_corporate_finance_11th_edition_ebookqmyjt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d08f228-e0aa-406b-87fb-d52171ffa311/blackjack_book_from_the_hangover.pdfIn PDF document text
    • http://xovenole.epizy.com/what_does_amp_error_mean_pioneer.pdfIn PDF document text
    • http://roranirit.epizy.com/le_code_des_collectivits_locales_tunisie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e878c268-b3a5-474e-85a0-fc3909a7272f/maytag_neptune_dryer_start_pause_light_blinking.pdfIn PDF document text
    • http://sabexuzeki.epizy.com/aditivos_de_concreto.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC4 4952 bytes
SHA-256: 247d26def9271f53c538d8b0bc533de89b162f97697816c50e24ef230ee64839
font_01_sfnt_off0000fb90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB90 10568 bytes
SHA-256: 0dc79c8bc46aa24d2c099a3a640aa6b1f05bd2b2a03a99ead1d540cb008bc75d

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