Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e521fc6a6f9773b…

MALICIOUS

PDF

48.3 KB Created: 2020-09-02 03:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 947bd472d1c4fc17d59184301c454f08 SHA-1: 674eec227fc7062574ed7e90fbdedd3e3890d74d SHA-256: 5e521fc6a6f9773b686aa67572b1ff7aa79feabb52cc1f3b88a7ff22ad06d29f
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document contains numerous links, many of which point to redirector infrastructure. The primary lure appears to be a 'Jasper report studio licence', directing users to 'ttraff.me'. This redirector is known to lead to malicious sites. The document also contains embedded links to a large PDF link farm, likely for SEO manipulation, with one such link pointing to 'static.usrfiles.com'.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PHP webshell / backdoor source high WEBSHELL_PHP
    The file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
  • 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.me/wix?keyword=jasper+report+studio+licence In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/76dd3d_0e67e5fdcfbd427593cb7685e8abc95d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/145364_790b748a68a24ba78da9d99f769125d6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b910ae_9c8b05570a07492b9a451cb5e9859f49.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0779a3_00f99676c5904664aa0c04e0a232cd41.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/69a512_73adec66360e4e52bbbb6398ad8ee627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8091/3830/files/melaleuca_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/dotoludaronironasexon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/vexudemeropuruxuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6059/7660/files/sisyphus_albert_camus.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7155f7c6b781428d89e675d6822e7004.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ced2dc_e645ba48f1494e75b83a04a7eaf66a58.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc14e4_dec5df2a7285465592d9ab00725291fd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/true_detective_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0445/9170/files/kingdom_hearts_final_mix_english_pat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0938/files/33232241859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/http_www._auswaertiges-_amt._de_de_laenderinformationen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/muvamipejanomanip.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_off00007be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE0 5056 bytes
SHA-256: 28ff90286cacfa305550bd80386c935f1fe26acbba6ed282c341adc0a189ba7a
font_01_sfnt_off00008d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D20 11744 bytes
SHA-256: 7900c79da7b4c8249c0e79a69188d2a12778642ba3c2454e62304e05e7ae1bf5