Malicious PDF — malware analysis report

Static analysis result for SHA-256 746e2d0f094daa73…

MALICIOUS

PDF

70.3 KB Created: 2021-02-26 19:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 84731f31664abee47bfe8faae048da24 SHA-1: b6ba9c3e93a37455610ce43211050fa058911bb5 SHA-256: 746e2d0f094daa7346dd698242e4a332395e87f9da18e65ab7d00f5d761d618a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=husqvarna+445e+ii+18 In PDF document text
    • http://dfwshootersupply.com/73373976792k6lb9.pdfIn PDF document text
    • http://playmarket-online.com/pifirovipenusixa7akdi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454426/normal_60027e1fbcc1f.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/85366005251.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/34106139691.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/logof.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/how_to_convert_ipynb_file_to_py_file.pdfIn PDF document text
    • http://bio-ita.fun/medical_laboratory_scientist_resume_templatexc3vk.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/how_much_does_it_cost_to_replace_a_catalytic_converter_toyota.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xivavop.rf.gd/coming_soon_landing_page_free_template.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/20535960543.pdfIn PDF document text
    • http://siwerixu.rf.gd/bendy_and_the_ink_machine_apk_apkpure.pdfIn PDF document text
    • http://zezilometup.epizy.com/39579427651.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/70288123727.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_off0000d08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08E 5252 bytes
SHA-256: 3548e3e0d72d6bd1fb46489781fdc2065195abdad32cc9db89710fe167af5a6f
font_01_sfnt_off0000e294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE294 15304 bytes
SHA-256: 75ae6ed9b1f1d5998da38814b7c5c9ca1f10dc2bb96e187f443f9179580415fd