Malicious PDF — malware analysis report

Static analysis result for SHA-256 e962723a80d5019b…

MALICIOUS

PDF

68.1 KB Created: 2021-03-01 22:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 916e25a30befa8de33ed53a4e6066529 SHA-1: 8ff1828af481e91d35d67ee36222d67ab2768359 SHA-256: e962723a80d5019b70ce391c7b24e86a8a42a1f09ece3559a0d544abc84e31d0
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://vilenefex.ru/wix?keyword=trigonometric+functions+6.2+rsg+answers PDF link annotation
    • https://cdn.sqhk.co/xakutofi/OjjgiuM/limumosidakurizatomu.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/Ocyegcz/21983069937.pdfIn PDF document text
    • http://mangalvpodarok.ru/10235179736kpq0k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_603bbb4ab5843.pdfIn PDF document text
    • https://cdn.sqhk.co/xixewebirike/jfTiggg/word_domination_hack.pdfIn PDF document text
    • http://cosmeteca.com/dokitanipimurevojexu89r7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365619/normal_5ffe4800dfdea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fc8691da320b.pdfIn PDF document text
    • http://korsabarca.com/police_car_siren_sound_mp3_download_pagalworldn4bcq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446166/normal_5ff76f05bb5bf.pdfIn PDF document text
    • http://shopyou.online/fomazozafojibalum1h9af.pdfIn PDF document text
    • https://cdn.sqhk.co/zebasama/CSgfice/prenatal_baby_development_week_by_week.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/defujo/bigerazuxolobogamimej.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/69222437538.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/41648442746.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/98851840588.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/guess_the_song_answers_level_64.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/how_to_understand_mathematics_concepts.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_off0000cb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB38 5528 bytes
SHA-256: a9bbc75d242edaa62d11f9bb369aee1084f38ccdca1bdcd9b1ca04a9754d30e8
font_01_sfnt_off0000de12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE12 10888 bytes
SHA-256: 92651fda2ccb737ce4bd4a8396aad01a7ccf6c3bf0fc09b3f24b211626ed61e0