Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc237411ff23feb0…

MALICIOUS

PDF

172.4 KB Created: 2021-03-20 02:59:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff9c743f59adf8495ebdd3bbdaf3a958 SHA-1: bf64de5854c1e3272a10377bc21728a8b7d45c95 SHA-256: bc237411ff23feb0b403e0002ac1ca9285633d463e23ac6cdc60da3468a7e04b
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a high-confidence heuristic firing for a redirector link, specifically identified as a free-download phishing lure. The embedded URL, https://mezovuduw.ru/wix?keyword=2020+my+country+mod+apk+revdl, is the primary indicator of this malicious activity. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest an attempt to trick users into downloading malware or unwanted applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://mezovuduw.ru/wix?keyword=2020+my+country+mod+apk+revdl PDF link annotation
    • https://s3.amazonaws.com/wiremeresegikon/a_p_name.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/the_rocking_horse_winner_symbolism_of_eyes.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/what_does_the_t_con_board_do_in_a_lcd_tv.pdfIn PDF document text
    • http://uaregroup.com/26333466323kjr79.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/public_engagement_strategy_template.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/gfgdZAD/72902270180.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/android_app_review_submission_sites.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/OrghhdO/79770368069.pdfIn PDF document text
    • https://cdn.sqhk.co/miweguzeg/jdZOGrU/kabotujatos.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/cijVc3l/little_builders_hack_apk.pdfIn PDF document text
    • http://irbestate.ru/the_man_in_the_high_castle_season_1_episode_5_explainedbd5lx.pdfIn PDF document text
    • http://lolkek.xyz/78245943944m9ot1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e770cc33-eaea-4a9e-b00e-e573a96283b5/wufusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc30ea07-7637-40ed-bc2b-94d5a05b884b/62539072459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d14244d-e1df-4a2c-9f65-3b5c055f9139/87952100150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50595630-fecd-4cee-8aa1-50cfc71c5f94/82952843336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7200f22-5950-42a3-bd92-6dcfe3c18401/panasonic_kx-tgc210eb_cordless_dect_single_phone.pdfIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_c92914d6b1ad4ed096c986c95760f183.pdf?index=trueIn PDF document text
    • https://bcbc83ff-a82b-4234-bf1d-c69e8cae54d5.filesusr.com/ugd/057c82_6983e0c792ec4df485ad07f4c4556027.pdf?index=trueIn PDF document text
    • https://7fd672c9-0ac8-42d3-9d3c-9ebb2fbea2b4.filesusr.com/ugd/92785a_0fda104a63c54033a4dfe6b2552b1f1c.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00014095.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14095 95012 bytes
SHA-256: b48e0a71475d8a109dcb9929ac95bf3383d9b77f8f91c8f4c7c045d85206133d
font_00_sfnt_off0001304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1304C 6588 bytes
SHA-256: 4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
font_02_sfnt_off00025404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25404 5444 bytes
SHA-256: ba449bd726313d7c1e47e70e819389bd13785a65f3b9a44ee5f692089d4cc8f8
font_03_sfnt_off00026684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26684 11644 bytes
SHA-256: 727628fe4fd8a24618ed2a719337cbcae84e98ece66830678614cdce32cd0a11
font_04_sfnt_off00028e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28E35 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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