Malicious PDF — malware analysis report

Static analysis result for SHA-256 66fab97dbdda06de…

MALICIOUS

PDF

84.2 KB Created: 2021-03-27 15:16:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a247ca4144c58bcac3e20d11ea6f3452 SHA-1: d3fdd8b31a196be886e06c1e296c63c53a02aacd SHA-256: 66fab97dbdda06dec1ca6a77f809fb6fd834b3b29a08fb99042248acdcc2ebd6
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by both ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to host phishing or malicious content. The primary URL points to a page that appears to be a search result lure for "agriculture in ancient egypt pdf", likely intended to trick users into clicking through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/award?keyword=agriculture+in+ancient+egypt+pdf PDF link annotation
    • https://cdn.sqhk.co/menigopas/fhbgg9V/ragiga.pdfIn PDF document text
    • https://korareledanos.weebly.com/uploads/1/3/4/3/134385748/9170022.pdfIn PDF document text
    • https://pegavuvusejeda.weebly.com/uploads/1/3/1/4/131483027/soropurijasi.pdfIn PDF document text
    • https://zanefasijim.weebly.com/uploads/1/3/5/9/135965469/6230995.pdfIn PDF document text
    • https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/8563976.pdfIn PDF document text
    • https://boxoxezerutevok.weebly.com/uploads/1/3/4/3/134317212/849d5c9e9e405.pdfIn PDF document text
    • https://komutezux.weebly.com/uploads/1/3/1/3/131398036/f6914.pdfIn PDF document text
    • https://basosogufu.weebly.com/uploads/1/3/4/6/134682995/winarelaga_gusowezizedesu_bixilobifonogus.pdfIn PDF document text
    • https://fudafovagovareg.weebly.com/uploads/1/3/4/8/134868702/jinulid.pdfIn PDF document text
    • https://nolulanulupu.weebly.com/uploads/1/3/1/3/131379612/3558977.pdfIn PDF document text
    • https://duxobibalarig.weebly.com/uploads/1/3/4/3/134360367/64788.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/11880184064.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/28711154495.pdfIn PDF document text
    • https://fojaloda.weebly.com/uploads/1/3/0/7/130776233/3877e8.pdfIn PDF document text
    • https://cdn.sqhk.co/fajaleniwa/giicgjN/bimomoborulujidozeb.pdfIn PDF document text
    • https://cdn.sqhk.co/didirepakavi/g4ij6ja/kids_movies_on_amazon_prime_free.pdfIn PDF document text
    • https://jaxevilin.weebly.com/uploads/1/3/1/6/131606955/besifobe-kokenegidigera-lesudeteka-nuworimotiwabej.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/dghKOgW/salobovuriforoxizib.pdfIn PDF document text
    • https://potijesidademut.weebly.com/uploads/1/3/4/3/134351663/tenevonakeluv_juvulofuvoje_rogagodogun.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/zonebon/foxugoro.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/67021362405.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/fluval_306_canister_filter_leaking.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/7691350672.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/adobe_flash_animator_free_full.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/cellular_respiration_pogil_answers.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_off00010b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B70 5236 bytes
SHA-256: 97b9fe20a10db45172c11553f375d11baf4977e6b3821f79b2e1e1348999b6c7
font_01_sfnt_off00011d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D63 10560 bytes
SHA-256: 95e0e08582fd7e0ecec17e73d6e035a2a3a013602c97c69472a8c0cb715a78b4