Malicious PDF — malware analysis report

Static analysis result for SHA-256 3efbdc6bde4033c8…

MALICIOUS

PDF

72.8 KB Created: 2021-03-10 17:55:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 879b4f310e662dc5daf51af88da54238 SHA-1: f689df9292b11de86f9c408e95c532db8388ef01 SHA-256: 3efbdc6bde4033c8b27f46ca76c2878ba137ef72ea73dc45c8e94507dd2152a7
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=osrs+99+hp+guide PDF link annotation
    • https://cdn.sqhk.co/fofotixoz/7mxfsM7/94723484266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5fe656ae1d8d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463543/normal_6038332de4764.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/heIcid3/6484109178.pdfIn PDF document text
    • https://cdn.sqhk.co/dunafafaxen/c8hhIij/kizetonazojosusin.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/0ihScI1/90013831722.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417429/normal_5fc8973d6cb0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408863/normal_5fdf488a50c0b.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/what_are_the_different_styles_in_interior_design.pdfIn PDF document text
    • https://cdn.sqhk.co/goxufime/emv8hjf/scary_bildi_math_teacher_cool.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418993/normal_5fdd992e44517.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/im_a_child_of_god_yes_i_am_spanish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490539/normal_5ff3f1fd8cb68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471711/normal_602742d8bd6a3.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/47656232245.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413865/normal_5ff4ce9020e15.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/difference_between_margin_of_safety_and_factor_of_safety.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_5fe8f57cd3086.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/dovulavavo/cambrian_period_sub_indo_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/nazoduxe.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/42270102592.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/nepixevas.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/40145437707.pdfIn PDF document text
    • http://vowojuxibaxo.myartsonline.com/11501987621.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/bheema_telugu_songs_ringtones_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/how_to_unlock_rar_file_without_password.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_off0000e185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE185 5160 bytes
SHA-256: 0080f5ea9a3a863a77d94068b541bdcc735edd811037d290802322eb3ffaefcf
font_01_sfnt_off0000f30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30A 10152 bytes
SHA-256: 05b3774d172e45f9e6331641a28dab019e3a0fa3935634b022be876ba344103d

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