Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e09778669e68e5…

MALICIOUS

PDF

71.8 KB Created: 2020-12-22 22:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6a20a3a6220dc29b26ea4e6fb903d955 SHA-1: c1bea9ab776e0342a95e53f12934d552c6ab418e SHA-256: 03e09778669e68e5066736bf08d2791ac024608e76a7e56a496a5ad0dba53740
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://traffking.ru/strik?utm_term=dark+hero+viii+release', is flagged as malicious. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through the linked content.

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 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://traffking.ru/strik?utm_term=dark+hero+viii+release PDF link annotation
    • https://xomowozijirogap.weebly.com/uploads/1/3/4/6/134667332/1200152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450639/normal_5fa7faf16efc2.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/modowor/eagle_ridge_elementary_school_phoenix_az.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd52f8c2d4633280e99069/t/5fdd79b77f4e6a33670cc5d5/1608350137831/alien_shooter_2_hack_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/bahnschrift_bold_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/90420872989.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/protocolo_sonda_vesical.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/wetiwisokipesewaderida.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/57980098679.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/10365841921.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_off0000dbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB0 4896 bytes
SHA-256: 7babed851df623dd6b32550f4b3398bbdd950d614ba65ff5a5c9402aaae46aba
font_01_sfnt_off0000ec59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC59 11204 bytes
SHA-256: 9e0074f8a129cf2ad4c2371fd1b2ab7d46e0a4124e6fb06bb4911c50540bc1bf

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