Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f242e8cdec055ee…

MALICIOUS

PDF

74.8 KB Created: 2021-02-08 07:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cee1c4dfb8afe42f42e8274fd1ea8f9c SHA-1: e58bace5bbe521ea90ad33d24aabf9ed8b9eb26f SHA-256: 5f242e8cdec055eeb1699f3cae916fa75e09f328b966bf093d02c86d2dee67fc
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://jacksth.ru/123?utm_term=laundry+tub+pump+lowe%2527s PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fe059974e109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450249/normal_6001f8a281729.pdfIn PDF document text
    • http://it50life.pro/xekofojuxewibudewbivfa.pdfIn PDF document text
    • https://cdn.sqhk.co/gozawelesutu/4gijjih/83743064840.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448976/normal_5fff116bd39b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417318/normal_5fd8303ba6e65.pdfIn PDF document text
    • http://ctuxuu.com/mudagatubezoyu2bg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fcbf811baacc.pdfIn PDF document text
    • http://repair-planshetov.ru/pentatonix_sheet_music_book2fv36.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/gt3tifQ/ups_drop_off_gonzales_ca.pdfIn PDF document text
    • http://bamejudodenor.iblogger.org/resident_evil_biohazard_game_for_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fosisidevafepet.epizy.com/kaththi_sandai_tamil_movie_songs.pdfIn PDF document text
    • http://zorijofoxafa.epizy.com/47001041533.pdfIn PDF document text
    • http://zixoxajoredipub.epizy.com/15869591286.pdfIn PDF document text
    • http://dadorisisewane.epizy.com/pawivovezuregatujimovibo.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_off0000e729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE729 5412 bytes
SHA-256: 031dfbde9d7307dcf92b9c1d26bfb10a71886c8f69935aea41e4ad7c772f81cf
font_01_sfnt_off0000f994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF994 10856 bytes
SHA-256: 16cf41f620b6635a9ff62c9b853ff33b0f5e2ffc6714dc38a26b027fec2114e5