Malicious PDF — malware analysis report

Static analysis result for SHA-256 7620f1eaab1f9335…

MALICIOUS

PDF

72.8 KB Created: 2020-11-18 11:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 1c693aaf29c58f612e82159545f167a9 SHA-1: 47e8224f529d3c0906bbd2b8fa0295285bc77ca5 SHA-256: 7620f1eaab1f9335aaa2f32b4564324b9b82484cbae2bb52f05842ba5143ae9c
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to reference 'Horizon Zero Dawn PC Version' to lure victims. The presence of numerous external PDF links suggests a link farm or phishing campaign designed to direct users to potentially harmful sites.

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 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.
  • 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://traffking.ru/aws?utm_term=horizon+zero+dawn+pc+version In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5f9a36a7e3002.pdfIn PDF document text
    • https://falogumirej.weebly.com/uploads/1/3/4/3/134368081/2005888.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_5f96ca9453094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414677/normal_5fb37b5f3c20b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f8b08f12540b.pdfIn PDF document text
    • https://xatufatug.weebly.com/uploads/1/3/4/5/134597760/4275922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388279/normal_5f915c5d9b189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_5f9e05ffa68de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464720/normal_5fa466c46c5dc.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/1cf42fbe-39a9-48f0-af87-d04098754647/sosevizejanupopimigipi.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/taiwan_railway_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b22e3da-6af2-4bca-9467-d3f28fa86a41/popuxogedirug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c735dbd5-8c27-46e0-8a92-e79bae1774fc/gutipabopodetosijivogam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86d20bda-99ed-42f4-b4b3-91bae38e482b/72476359636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a55711b-6740-4e69-b7fd-13bc9a38bc44/ethos_in_the_declaration_of_independence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c35581-3111-42f3-8ca4-b068c3be2df3/lifetime_sportsman_license_in_tn.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_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 5196 bytes
SHA-256: c8e4fcfe871532cc1c8e4f92c4b0d48cc76ce916a074add189efe83673b8def0
font_01_sfnt_off0000eff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF1 11236 bytes
SHA-256: fd41c34eb5c1380b92ef3308778db8b0ab09bbe9bdda37be0acb16f471caa94a

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