Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09fa45a4a159299…

MALICIOUS

PDF

86.3 KB Created: 2021-03-16 19:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8e1e451e95f89c274c145374c8d1401d SHA-1: 9186807286539dbfb3946bad72ea1874e1c5ba5d SHA-256: e09fa45a4a159299d54450ccc6a82158519c3ca60ad89835e3552e6df201877f
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 0.9992

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://jottigo.ru/wix?keyword=ffbe+arena+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451018/normal_5ff2aee4980b9.pdfIn PDF document text
    • https://sisekiki.weebly.com/uploads/1/3/4/6/134622657/c22e7fa3629327c.pdfIn PDF document text
    • https://cdn.sqhk.co/dijawagag/ih3jigi/asthmatic_treatment_guidelines.pdfIn PDF document text
    • https://povuwifapijolak.weebly.com/uploads/1/3/4/2/134265363/6730564.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410965/normal_5feed2d9633f0.pdfIn PDF document text
    • https://cdn.sqhk.co/retakabif/VhfOjjC/33822692657.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_6044913323fe7.pdfIn PDF document text
    • https://cdn.sqhk.co/bobavijiwoba/ghghvvf/revebutemebepakob.pdfIn PDF document text
    • http://zazerabila.iblogger.org/majumoladizosudapefo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403822/normal_60014b5ba1d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_6024b272bb4e4.pdfIn PDF document text
    • http://muwabiva.iblogger.org/zovaxonogupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fcc008f71ec0.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/hZXhjE6/29929651192.pdfIn PDF document text
    • https://nuvipepive.weebly.com/uploads/1/3/1/4/131409498/bijegepevak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393220/normal_5ff65b87452f6.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/i6ibFh2/bbc_weather_app_symbols_explained.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9ffa65b4-b95e-481c-977d-2cf6acaa57d7.filesusr.com/ugd/f68d46_5c330affd95744269bfeba96674a4d20.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_cf0eee2355fc4531b5c1289933762d27.pdf?index=trueIn PDF document text
    • https://5bf49506-6ef1-42f8-8f90-7e3689255fd3.filesusr.com/ugd/8fe1bf_3a5fb2d06c004ba5bb96e62225b5fa93.pdf?index=trueIn PDF document text
    • http://suzuzozadigij.epizy.com/68615495108.pdfIn PDF document text
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_69415eb1cd9740ff8c39cb3d214a90f3.pdf?index=trueIn PDF document text
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_7686cf53452a4824afc93456fb074284.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 4960 bytes
SHA-256: 23a41d1868931e09c5f10cd91f64fd627b4437488345cf325313f631fc5639b8
font_01_sfnt_off00011000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11000 11276 bytes
SHA-256: 3ca4330d533d2ac9d33ff62d3aded9f31378cd85f640f5c637776e82ed464e5f
font_02_sfnt_off000136c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C7 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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