Malicious PDF — malware analysis report

Static analysis result for SHA-256 b81169e621d2b2f6…

MALICIOUS

PDF

73.9 KB Created: 2021-01-20 06:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fa1bccdd3cbc9c068cb2f56b3049613e SHA-1: 298a5c5bb6ef06cbc4f641ae34feb15033f83963 SHA-256: b81169e621d2b2f6290a7b5883020c5a87ccf04e9779cbc317ba9e90105b9f14
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://jacksth.ru/wb?keyword=dead%20space%202%20free%20download%20full%20game%20pc PDF link annotation
    • https://cdn.sqhk.co/jufebarur/bo7hfGc/auto_clicker_free_download_easy_to_use.pdfIn PDF document text
    • https://site-1257531.mozfiles.com/files/1257531/inesss_guide_infection_urinaire.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475852/normal_6003e0470fbe4.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/hhTInjb/10259862859.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/V92jfic/halloween_face_mask_with_nose_wire.pdfIn PDF document text
    • https://cdn.sqhk.co/puwonereb/ukjaifE/the_third_day_cast_iphone.pdfIn PDF document text
    • http://tukazijib.22web.org/37825879401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_5fa4394f4da77.pdfIn PDF document text
    • http://pavawafupef.66ghz.com/spreadtrum_android_usb_driver_32_bit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505820/normal_5fb2a57a28154.pdfIn PDF document text
    • http://wobixoka.66ghz.com/dieta_para_cirrose_hepatica.pdfIn PDF document text
    • https://cdn.sqhk.co/velizovatim/hjhiats/granny_and_grand_house_chapter_2_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xovijoj.epizy.com/xavaxas.pdfIn PDF document text
    • http://tubofebagadupa.epizy.com/bala_bala_song_pagalworld._io.pdfIn PDF document text
    • http://zekubegem.epizy.com/vabosexokivijasur.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_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 5700 bytes
SHA-256: 55395c02f6e255ff716efc8876a84c6d2565d18d422030cd5409e94befd945af
font_01_sfnt_off0000f73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73A 10332 bytes
SHA-256: 2e985ace331a7c889906fc4bb4c3c94edca4929e198215c05d02ed5521870757