Malicious PDF — malware analysis report

Static analysis result for SHA-256 5158341e459b6792…

MALICIOUS

PDF

71.8 KB Created: 2021-01-16 04:02:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ed6401be0447f19023d3a4c86b60a05d SHA-1: b22c9345339de02bacb3cf39fcae4e873483c5fe SHA-256: 5158341e459b67928b6cac4196b7f4256da51277c193c137d1ac2bc8a0b001a6
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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=osrs+ironman+sire+guide PDF link annotation
    • https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/vobaxifeludiparume.pdfIn PDF document text
    • https://site-1174609.mozfiles.com/files/1174609/gevepamofovakenizakozomis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_5fac19d368de0.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/jigglij/ash_of_gods_tactics_guide.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/zedudo/exclude_classes_from_jacoco_report_gradle.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/latiwubijevabesebudid.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/eclipse_installation_guide_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/27816842431.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/instagram_logo_png_white.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/62362353093.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/toresalupimal.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_off0000dd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8D 5140 bytes
SHA-256: 460de6b02f67f13bba1ae90dd69e8160a10f68a405a2f03a8ad328ca2992c1d9
font_01_sfnt_off0000eeea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEA 10572 bytes
SHA-256: a32a7d4de6da2e168db944651c17e257d31015cd167187bae2545a6b3b577b9b

Open this report in the interactive analyzer, or submit your own file for analysis.