Malicious PDF — malware analysis report

Static analysis result for SHA-256 2277757b6bf3454c…

MALICIOUS

PDF

69.6 KB Created: 2021-03-05 00:24:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f48f3d99ac6ceb7aa0b56378b269ed09 SHA-1: 74431e665cb9a16435b4bf7610b678b649b50a8c SHA-256: 2277757b6bf3454c14fe929a93c6385168c6b680298565dbfbd60248fa50a0ec
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://xezojetit.ru/award?keyword=how+to+hide+caller+id+on+a+samsung+phone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446789/normal_601b45fcb5de9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403687/normal_5ff64c1b6a6ce.pdfIn PDF document text
    • http://jerunurijo.iblogger.org/46272572994.pdfIn PDF document text
    • https://puwawegolawibot.weebly.com/uploads/1/3/2/6/132682739/1203823.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416796/normal_6007c793a901d.pdfIn PDF document text
    • https://jizesemud.weebly.com/uploads/1/3/2/7/132710762/4911577.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/gdhbS3k/fomebisulo.pdfIn PDF document text
    • https://puxetesotomu.weebly.com/uploads/1/3/0/7/130739839/rinidup-nuvigudawemurer-towenopovet-gadepanifud.pdfIn PDF document text
    • http://rotelebi.22web.org/garnier_sheet_mask_vitamin_c.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/igeF4aa/soccer_heroes_2019_mod_apk_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481053/normal_60385c6c8e9a5.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/E5vUUij/58671800700.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/hp_officejet_7612_wide_format_e-all-in-one_printer_cartridges.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelatid.epizy.com/neoliberalismo_en_mexico_unam.pdfIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_d1dbb3a2a1d0429c81a8ecb62b8f572f.pdf?index=trueIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_233ec8a00808416d84fb9dca57dc0ce6.pdf?index=trueIn PDF document text
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_a05b0bf92c554532820f64c155b8d017.pdf?index=trueIn PDF document text
    • http://beranaja.epizy.com/16980009286.pdfIn PDF document text
    • http://zagofij.onlinewebshop.net/zafubujaj.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_off0000d275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD275 5540 bytes
SHA-256: 91d340be30e6789a7362151d5c357b4cfd7ae656d339037deeab1c97f4c9b0b2
font_01_sfnt_off0000e532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE532 10320 bytes
SHA-256: bebea05cedb7086021f9043742d43f6ee2a0d3b53a8a58f6b588440717f13691

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