Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfa41ca8827c3d2…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 23:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1446035c4f3a6aa8024ff9a768e3ec41 SHA-1: 62c6c24a041802e2df8eb7e049fa9883d3a9e59b SHA-256: 9cfa41ca8827c3d2b38442271b7cc77ff2d9e0a093582487fc2ae95bbc733c38
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://ponafet.ru/wix?keyword=lunar+phase+simulator+answers+pdf PDF link annotation
    • http://lebedugipul.mywebcommunity.org/vuzoremodomogez.pdfIn PDF document text
    • http://fixadazopirutus.22web.org/sodastream_source_elements_starter_pack.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/dejimefin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_5fd1ec0ad18f8.pdfIn PDF document text
    • https://noromilo.weebly.com/uploads/1/3/4/5/134587763/ffa7c.pdfIn PDF document text
    • https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/87faf5085d14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454673/normal_60204acb4e849.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/fitawifa.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/70513086152.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nanisoz.epizy.com/esl_feelings_vocabulary_worksheets.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/82442336757.pdfIn PDF document text
    • http://nefaped.epizy.com/building_covalent_molecules_worksheet.pdfIn PDF document text
    • http://tiriburud.rf.gd/jebonusoj.pdfIn PDF document text
    • http://pusopifozubo.epizy.com/94100373138.pdfIn PDF document text
    • http://pavejovubebus.rf.gd/gelitubotade.pdfIn PDF document text
    • http://bezukovopobav.epizy.com/inhaled_antibiotics_guidelines.pdfIn PDF document text
    • http://xibiwoziveva.epizy.com/arduino_nano_v3_0_datasheet.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/ap_biology_test_questions_evolution.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_off0000db4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4C 5316 bytes
SHA-256: 013dfc2700aac6b364a469bb2adfbc0c5c48bb618aa5faabc76adc857ae9acbc
font_01_sfnt_off0000ed4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4C 10368 bytes
SHA-256: 037f3ab566ca01f9479c1bf200f2e8c8c3eb927705ff8ceefdef90f825cd61f9