Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ae4197ad729124…

MALICIOUS

PDF

77.8 KB Created: 2021-03-27 21:22:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a8fc7c5a6e6b80fef2c93453e693fc8e SHA-1: a53cd24e40d5362fb276bc8a6257d2e503735a75 SHA-256: 70ae4197ad729124c31648a18bc06682038a76befb8792a0c6e7b1853131d352
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/wix?keyword=the+talking+cure+book+pdf PDF link annotation
    • https://fuzifilagowiw.weebly.com/uploads/1/3/4/6/134698760/9513220.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/qCFbfIF/free_funeral_program_brochure_psd_template.pdfIn PDF document text
    • https://salapabozob.weebly.com/uploads/1/3/5/3/135326799/mawal.pdfIn PDF document text
    • https://bevalapiwilidi.weebly.com/uploads/1/3/4/5/134587476/xolijupazifuresoti.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvivifid/jhPsgeb/hidden_valley_ranch_potatoes_in_air_fryer.pdfIn PDF document text
    • https://dofidosuxemaxej.weebly.com/uploads/1/3/4/5/134595751/mututijotuladokuto.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/cYOYSxh/brand_management_definition_business.pdfIn PDF document text
    • https://cdn.sqhk.co/xovopebe/jajjwgf/nasijow.pdfIn PDF document text
    • https://jenazikefu.weebly.com/uploads/1/3/4/0/134017187/novevijikenoxeziniva.pdfIn PDF document text
    • https://cdn.sqhk.co/fakomuse/bgiefyL/industrial_nut_and_bolt_storage_bins.pdfIn PDF document text
    • https://pixufudevolu.weebly.com/uploads/1/3/0/8/130814466/fenal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://621cd70f-1aca-46de-91df-1bd8162c3e90.filesusr.com/ugd/9f1ad6_cdfc68eb38be4f8cad6b0e0868f27968.pdf?index=trueIn PDF document text
    • https://527ed197-5826-4432-9c89-449afa9d705e.filesusr.com/ugd/65ef70_1559a8f6e4c842f8b792e18ca305e839.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/branch_manager_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/how_to_know_my_debit_card_number_sbi.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/54319107929.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 5276 bytes
SHA-256: e27c97c2fbc782875e8b178f289af3f7ffdfc72dc29cc41f12ad6e21d38102b3
font_01_sfnt_off0000f770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF770 10720 bytes
SHA-256: a45317b8f0dfc6f4e92759d278f0ab3c56f0ccc0ba09d747d39d026886eecfdc
font_02_sfnt_off00011c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C0C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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