Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b285a10e52fedab…

MALICIOUS

PDF

45.5 KB Created: 2020-08-19 09:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49123e93209b3d8ae93455f8898c9492 SHA-1: c09862d9e0d6e1d27f75c4ebddb6290f35ebf547 SHA-256: 3b285a10e52fedab43bc7cebab5369074c7ef7ac76c1ffbbcf0c8abe41205a31
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to 'Kgmu bsc nursing admit card 2019', suggesting a phishing lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking and distribute malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=kgmu+bsc+nursing+admit+card+2019.

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.cc/pify?keyword=kgmu+bsc+nursing+admit+card+2019 In PDF document text
    • http://sazup.jvincentwalsh.com/uploads/1/3/1/4/131406676/zodalojixulutezexome.pdfIn 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/1/0432/7886/0454/files/63741892939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0928/0933/files/oxford_bookworms_library_stage_3_frankenstein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4547/7783/files/12527107989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/60730183881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5724/0478/files/39384658765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6549/files/51888237658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/98144842041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/51364316129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1694/4807/files/format_sql_server_stored_procedure_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/how_to_delete_all_twitter_likes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/direct_and_back_titration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/26459695490.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC5 5820 bytes
SHA-256: 23d5de7769c724025f46fd8adac8b88a8189d8c8e82c2e95d0dc234ea5cc0f51
font_01_sfnt_off0000717f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717F 10060 bytes
SHA-256: fc3a3c1f733706c27b0864187228e16a186d43b937bf513680a759f55acb26ff
font_02_sfnt_off00009432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9432 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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