Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2d5ea568dd3830…

MALICIOUS

PDF

72.3 KB Created: 2021-03-01 10:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 46052b9bf0a9b08b1b3ef5d801b7cb21 SHA-1: ad7dfa44e53a36a5fb1424ba0d0301cf58fb07b5 SHA-256: ad2d5ea568dd3830a6e61c65872582d3926ca104d30d03fe36cfc45a2466f5cc
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/award?keyword=bushnell+neo+ghost+belt+clip+uk PDF link annotation
    • https://cdn.sqhk.co/xolofiwano/buljhpS/snes_mini_mod_service.pdfIn PDF document text
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/7498125.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/ad262d7948456.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/Xg77jei/pink_panther_game_free_online_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/jdSCeif/15365722858.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zunewidimem/goretumabaposukuguvabu.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/walowavosipubozavute.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/porsche_cayenne_2017_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/boss_2_full_movie_hd_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/how_can_you_tell_if_your_automatic_transmission_is_slipping.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/76946000904.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/najozigadira.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/derituvumiwofopus.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/chick_fil_a_kitchen_staff_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/90440505050.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/zididusuweguba.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/abellio_rail_uniform.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4F 5024 bytes
SHA-256: 43617a3eea1b2d894e32b4a7ab1278dbed3d378d6a0abcb4e3f6e31269e589d6
font_01_sfnt_off0000e05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05F 11240 bytes
SHA-256: c3faa23ee8b24154b3996918a67231c4f6411141d973186035ec01f2b14569d4
font_02_sfnt_off00010607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10607 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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