Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b0818d431790a7…

MALICIOUS

PDF

68.4 KB Created: 2021-02-06 14:38:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: edaa1574df0dbbba427582db3345fc86 SHA-1: 4d3a6be1caf59dbe21e7336ec144427b5b98aa8e SHA-256: f0b0818d431790a7dd2bc58d76233d0e455dc29d326d6641b7fab4e33e26460d
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=coordinating%20conjunctions%20worksheet%205th%20grade In PDF document text
    • http://buyervannakupitvsem.xyz/41227872649t379f.pdfIn PDF document text
    • https://cdn.sqhk.co/bozadukopufu/jihieQX/zombie_apocalypse_paintball_hayride_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/gjdtIgi/593584950.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/atoeohz/golotutexolasatemuto.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/iiugijf/slither._io_2020_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/ierghjb/17301395498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486199/normal_5fe56e1a6be51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fe9f0d370618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388827/normal_5fe81eb2766b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kibulirol.rf.gd/5125583179.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/como_transferir_backup_android_para_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/sifesomigamukix.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/amazon_rainforest_fire_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/rdr2_gunslinger_quest_guide.pdfIn PDF document text
    • http://pixagikaw.epizy.com/a_star_is_born_soundtrack_shallow.pdfIn PDF document text
    • http://lorasis.epizy.com/gejusakifegedewolasigetix.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/name_card_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/baby_shark_karaoke_free.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_off0000ce1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1D 5432 bytes
SHA-256: b0d76091e7bdd2e22a7dfe355b147abb6d3e30b1ad36ce199b170399bd56add1
font_01_sfnt_off0000e0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A7 10836 bytes
SHA-256: 12d874e30f47f636012bd05b47390af8440433032778774da082d2f66e0b2cad

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