Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abfc6a92c1436ff…

MALICIOUS

PDF

59.5 KB Created: 2020-12-23 06:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 759a9504eeedec8e66eba302a80b71ca SHA-1: e4b512c7f3d143ee5b51ad4ade370eee82b143fc SHA-256: 7abfc6a92c1436ff91ffac003971630424062d53c24f102add61f26941dae55a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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 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.
  • 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://trafffi.ru/strik?utm_term=flow+free+extreme+pack+9x9+level+30 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5fdf6b5d19874.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368982/normal_5fccedec2db5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5f92d2044a680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fc0594b2ab04.pdfIn PDF document text
    • https://tojopuxibo.weebly.com/uploads/1/3/4/2/134265943/sutesogavabevi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482188/normal_5fd1e73897326.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5fcbbcab0f1a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5fa69f6d32317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5fbec577f2f0b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/8657116589.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/nascar_heat_cheats_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/exploding_box_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/gevovakoraxupade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73927ae6-49e1-4676-aec1-47d0576de1fa/84169549373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873cb154-0a4f-4787-a9ec-025a9bcfe0f2/46402533396.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/airmen_online_application_form.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_off0000ab90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB90 5684 bytes
SHA-256: f8d65cc12fa35294bb208806f79b5725d70d4c418dd368123dd00183db2418d3
font_01_sfnt_off0000beee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEEE 9636 bytes
SHA-256: 1cc15cab03f30ff08b3bb8194a35bd1ffae3c3e8c4a31990b47e819ff37b4514

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