Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b22565ef568cf1d…

MALICIOUS

PDF

59.2 KB Created: 2020-11-22 07:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 36cf6a58af04e1c64a124db4854b23ac SHA-1: de3db917ee89e314c6738ab6cdb8f4e56cda6057 SHA-256: 6b22565ef568cf1df86b17652557885a449db43089b5899106ee91995a71b8f0
186 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 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://traffking.ru/123?utm_term=goodwill+san+mateo+phone+number PDF link annotation
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/9183548.pdfIn PDF document text
    • https://lijonalorobu.weebly.com/uploads/1/3/4/3/134340538/fujep.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/5844107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384144/normal_5f8fb5807fe1d.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/xurejetexu.pdfIn PDF document text
    • https://buwirudoxux.weebly.com/uploads/1/3/4/5/134597973/8139192.pdfIn PDF document text
    • https://vavetoros.weebly.com/uploads/1/3/4/8/134854671/2bb8b.pdfIn PDF document text
    • https://latudawa.weebly.com/uploads/1/3/4/3/134308630/8595340.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/kunofixale-lizifejus-vogep.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/rigodapotor_dudopoxa_sotalikepe_zibogora.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/99e646d5-65a1-439c-8382-06acae6fd93b/vededezerubudabuj.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_off0000ad38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD38 5464 bytes
SHA-256: 9019ade7051c3d444e6d29ed3af92b842ab9f44efb10eb07e48dc67ff1f03aa0
font_01_sfnt_off0000bfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA8 9532 bytes
SHA-256: 03328475f21a67203547fd17ad64bfd80955111fddb4947ed17a881f736c1482

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