Malicious PDF — malware analysis report

Static analysis result for SHA-256 267f7e9ba6fb8f84…

MALICIOUS

PDF

65.0 KB Created: 2021-01-30 11:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 09b06c9d93c354d0486e4c99057c6bfd SHA-1: aa6616a03d35f694c5ffddee9033862a52cc490b SHA-256: 267f7e9ba6fb8f84ad30a59867e422f5a8d8d4f69dc5b073b5d3c8dbedfa42fd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URLs and the PDF's structure suggest it is part of a link farm designed to redirect users to potentially malicious content. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile strongly suggest it functions as a downloader or phishing lure.

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
  • 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://seumenha.ru/123?utm_term=properties+of+solids+liquids+and+gases+ks2+worksheet PDF link annotation
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/malikame_murapat_sofikafabivivok_kezokagiraromo.pdfIn PDF document text
    • https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/watajadofik-kakosije-wipunolus.pdfIn PDF document text
    • http://ericksandoval.com/96124224663an7iv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406169/normal_5fcd606e5754a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462351/normal_5feaf9a8896b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_6011855d4d65f.pdfIn PDF document text
    • http://peroruse.iblogger.org/32756483474.pdfIn PDF document text
    • http://agreevudb.rest/basic_synonyms_intermediatevoodm.pdfIn PDF document text
    • http://luminar2-download.xyz/chocolate_cake_recipe_simple_no_butterfom7f.pdfIn PDF document text
    • http://cosmicgig.com/toy_blast_hile_apple7tmhl.pdfIn PDF document text
    • http://tramlaweq.online/whispering_woods_road_12l5wz5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382793/normal_5ff06a42c9311.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://filazit.epizy.com/indemnity_report.pdfIn PDF document text
    • http://jujizulafob.rf.gd/zunitedoxosivu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C8 3080 bytes
SHA-256: 3ea9dc0fe5daeba8b7c1286de8752a991578e51b79301a8010be3d8f06b4997c
font_01_sfnt_off0000bfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD0 5716 bytes
SHA-256: 31db62b01430e330dcad555710b379bd993f1d326122179ff26221cd5d495c32
font_02_sfnt_off0000d349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD349 10304 bytes
SHA-256: 61ac3100ab9af840e1f739ebe918574ebae68eb87c2847ff9efac7f184b880df

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