Malicious PDF — malware analysis report

Static analysis result for SHA-256 1668cbde7ae1d276…

MALICIOUS

PDF

65.0 KB Created: 2021-02-14 21:12:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52c239b32c03aebdf1a0716429a43721 SHA-1: dab0c4c77acda0f6dbe5cf8ea99dc785106f5b4b SHA-256: 1668cbde7ae1d2765c255f094344e66f506f7c3aaf8c94a064c1c6ecb75bc698
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=blood+elf+leveling+guide+1-80 PDF link annotation
    • https://cdn.sqhk.co/xezufulozuwo/VRjbgdG/resasajokis.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/FbKvhfE/88359868338.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/hdijgij/walolufazilisare.pdfIn PDF document text
    • http://jazeforip.22web.org/7098709146.pdfIn PDF document text
    • https://cdn.sqhk.co/xumirikebixo/ahcjfhh/fetedizezo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451544/normal_602290e7d52d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fe64bb8526b8.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/X60iw41/todizaxarodelirufakibupis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6014e3f589ad6.pdfIn PDF document text
    • https://cdn.sqhk.co/zolaxadivowe/ajdggGu/epic_battle_simulator_2_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vepefilome/jiHgcic/retired_hitman_movie_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/doxelatofon/nSjijgl/17783208168.pdfIn PDF document text
    • http://foodguideblog.com/diablo_3_zip59mzj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/saxefi/angular_5_format_date_example.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/tuwebudulavarubev.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/52090663256.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/zoziboxadufetuledewu.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/biodata_format_for_teacher_job_in_word.pdfIn PDF document text
    • http://futuwerelak.epizy.com/2_pics_1_word_facebook_answers.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_off0000c1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B6 5120 bytes
SHA-256: 3466c50ce0bd723e19232f7cc385977d71d525d60491433ca41ae27b4b733b08
font_01_sfnt_off0000d35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35B 10468 bytes
SHA-256: e121ecad20c5a8de241a8cd6dcf70bb6dfb709ef2dd1770d0fa17140fef04a66