Malicious PDF — malware analysis report

Static analysis result for SHA-256 087f70768f76b287…

MALICIOUS

PDF

40.2 KB Created: 2020-09-20 14:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 335ae708d5bc658e1693d7556b6ea379 SHA-1: 8c63ae52bed86fc40310c6a06a8971fa7b6d3f10 SHA-256: 087f70768f76b2877e1ff136cf78c4f1471ae0c04db3947b767c523fc162f851
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service designed for SEO spam and phishing. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The ML classifier strongly indicates maliciousness, and the presence of redirector links confirms a malicious intent to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.link/wix?keyword=geometry+2+trigonometry+test+review+answers In PDF document text
    • http://files.consoltech.org/uploads/1/3/0/8/130814078/9893829.pdfIn PDF document text
    • http://zimijibi.hounslowpensionersforum.org/uploads/1/3/0/7/130776447/1701922.pdfIn PDF document text
    • http://juwovagu.hopesecondarylibrary.com/uploads/1/3/1/4/131406717/fotafupisalumel.pdfIn PDF document text
    • http://files.optmlacad.com/uploads/1/3/1/3/131382092/baboliv_fixiwemegasulo_jajovo.pdfIn PDF document text
    • http://files.scrappingfairy.net/uploads/1/3/0/7/130738914/kanotuxadinivuvas.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/renaronepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/republicain_lorrain_necrologie_pienn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/the_doctrine_of_grace_in_the_apostolic_fathers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6160/6550/files/high_frequency_oscillatory_ventilation_in_neonates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/riwujerozurajiku.pdfIn PDF document text
    • https://c54be660-d24f-4c64-91e1-e8bc6fe122b6.filesusr.com/ugd/20d83a_bbca0ab079c747a2bcebfeb12082da7f.pdf?index=trueIn PDF document text
    • https://a5e10b79-4a6c-459d-9080-e34d9a38a5b9.filesusr.com/ugd/1fbf8b_afdbd90f3e6c44cc97cad53b6d89ef6b.pdf?index=trueIn PDF document text
    • https://e34ab25b-f57c-4c8b-805e-43abef05151e.filesusr.com/ugd/81cd61_1c46ba5adc4347049af3c17f22d4961f.pdf?index=trueIn PDF document text
    • https://af802943-0a86-4bef-9c40-80c789df71ee.filesusr.com/ugd/6203b9_2b8bfeded6894e95ba3bdf9540738a1e.pdf?index=trueIn PDF document text
    • https://303d7633-a2ec-49f3-8f1b-d6b6899949a2.filesusr.com/ugd/7ab50f_8bf98c4a188b4f82ad6c916ebd56457b.pdf?index=trueIn PDF document text
    • https://447c4536-5d05-4710-99b6-80282488edb0.filesusr.com/ugd/db1da1_d2d77a4141b4481cb45d34d0f32165f7.pdf?index=trueIn PDF document text
    • https://72bb46a9-4c50-4bef-87c2-6f1f9e0a5803.filesusr.com/ugd/58a813_1d77f2a957ff4b9c8603cdb27c9fe424.pdf?index=trueIn PDF document text
    • https://9e329d5b-b930-4acf-9e3e-3e10b4d27290.filesusr.com/ugd/7e84b7_4fd5f17e4eb84422aef62af566fd321b.pdf?index=trueIn PDF document text
    • https://20f63f31-19e8-4d91-83e0-11b01421e873.filesusr.com/ugd/e5412a_da715d3010894c88931b3db985af5900.pdf?index=trueIn PDF document text
    • https://bf9c6616-cc26-46fd-b7ea-33d8b5b1aa28.filesusr.com/ugd/5f5755_424eaf49b0c54a19b2b9b6e470aca974.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

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D0 2244 bytes
SHA-256: a706874ddd052ab2df5e792c6428adf830c98bcc3e6b66fbf396f9e1db8dc665
font_01_sfnt_off00005ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED6 5388 bytes
SHA-256: d391f6432c91f6801521f1b095bb6ec27372aec0833c54870ddd952dcb001130
font_02_sfnt_off00007138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7138 9944 bytes
SHA-256: 710f324f5254fc14c631e5345a775ef7ce6544ef6bf9e34cfedc9f406fc96ce2

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