Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7101f07fa175e17…

MALICIOUS

PDF

73.5 KB Created: 2021-02-18 06:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 249972d76f07e8c87c60df19a4312337 SHA-1: a8da80942cf32762eac1915ee03fe13ceeb2d572 SHA-256: a7101f07fa175e1783e049b9429117bfeb166b8beaf61d522baf716a75d6b840
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a phishing lure using an SEO redirector. The embedded URL `https://jacksth.ru/wix?keyword=dog+front+carrier` is likely part of a phishing campaign designed to trick users into clicking through to a malicious site. No scripts were extracted, but the PDF structure and URL suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=dog+front+carrier PDF link annotation
    • https://cdn.sqhk.co/natefisaka/dhgjdWC/mofapupefum.pdfIn PDF document text
    • https://cdn.sqhk.co/vudebalox/WBijjhe/notes_keep_keep_your_notes_safer.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/6hihdjc/90677277706.pdfIn PDF document text
    • http://dabuvede.66ghz.com/rail_reservation_ticket_form.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/8jitwhg/download_game_anger_of_stick_3_mod.pdfIn PDF document text
    • http://kixamugefuwa.22web.org/ccleaner_apk_for_pc_free.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/jgje2Up/32335811079.pdfIn PDF document text
    • https://cdn.sqhk.co/tipusuzog/fIhcjeG/groupme_app_free_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/nqMghat/crushing_things_with_your_car_videos.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/wisuw/rizesanedilodezagevupav.pdfIn PDF document text
    • http://rebobimakefeli.epizy.com/70755260760.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/garig.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/kalnirnay_marathi_calendar_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/17156724752.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/huawei_p10_plus_android_8._1_update.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/bittorrent_sites_for_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/40672597351.pdfIn PDF document text
    • http://zaxalamel.rf.gd/59833267648.pdfIn PDF document text
    • http://dukizovisepo.rf.gd/89296073126.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_off0000e567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE567 4836 bytes
SHA-256: 0cdfb8d692c270c043756f026138ac01197b772b9474842bdaf8d0d2067cdcd0
font_01_sfnt_off0000f5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FB 10208 bytes
SHA-256: 684abd5e2ad0b72e2830fac2f252b0e7acadcd8f9709598af8c96aa554960bb3

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