Malicious PDF — malware analysis report

Static analysis result for SHA-256 660340fac7e3491d…

MALICIOUS

PDF

80.9 KB Created: 2021-04-01 17:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4ce656dfe28ab73f59fe4a75f28e19d SHA-1: 50538e290e975c8b7dd8e7072bc210d9c961e9bc SHA-256: 660340fac7e3491d3f3ce0d4c30956ffb0eaba4c83fd013a286bf855de053339
76 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a "free-download phishing" lure, directing users to a suspicious URL. The embedded URL is a redirector, likely intended to host or serve a malicious payload. The ML classifier strongly indicates maliciousness, supporting the phishing and redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://soxebez.ru/wix?keyword=wii+cios+249+wad+download PDF link annotation
    • http://baderezu.scienceontheweb.net/1554746829.pdfIn PDF document text
    • http://dutarotanazosuv.medianewsonline.com/holt_chemistry_textbook_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/gcijehj/30226339217.pdfIn PDF document text
    • https://cdn.sqhk.co/lusesito/cgihj9K/fairy_tail_magic_circle_live_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/vcjhhiX/4586915332.pdfIn PDF document text
    • http://jonusawa.iblogger.org/81292336678.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/wupiwupiwot/dg_vaishnav_college_arumbakkam_chennai_application_form.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_9776268d837847c6b72df55d18796958.pdf?index=trueIn PDF document text
    • http://suzifoki.myartsonline.com/l_appareil_genital_feminin.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/what_true_love_feels_like_quotes.pdfIn PDF document text
    • http://mijalofatal.epizy.com/blood_bowl_2020_rulebook.pdfIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_89feca45318a49b3afa7671cde2ce716.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/bluestacks_4_full.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/28875710070.pdfIn PDF document text
    • http://lorenivi.rf.gd/bewalipidesilikegenewaki.pdfIn PDF document text
    • http://pebeminozari.epizy.com/alcatel_3l_specifications.pdfIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_26377a2685034a239c34a1bc79004d96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovuzize/72963909559.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_5a05de2dd560470cbe12777c2455b6eb.pdf?index=trueIn PDF document text
    • http://toxawilel.epizy.com/sister_christian_piano_sheet_music_free.pdfIn PDF document text
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_a87eb754c98f44de88d03ca945e3fc7b.pdf?index=trueIn PDF document text
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_4e47309f1f794c138ea67594843f0c46.pdf?index=trueIn 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_off0000fceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEB 5316 bytes
SHA-256: cd338ca9400bb68be629ce8471a05a4e3146de0f145144f8890c8e6f517f32f2
font_01_sfnt_off00010f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F36 11812 bytes
SHA-256: ce87e9b25aba1244b8434289f8791a56f7cec2b0c957940e6e1d76cdd18d0c22

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