Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb9bf07f6af9148…

MALICIOUS

PDF

46.5 KB Created: 2020-09-10 00:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01618b606c949fb9b75208f24e8d01cc SHA-1: 70e71b6d9c9f1de1aca943252402b5fdb9aa50bb SHA-256: 8eb9bf07f6af914876dcedde4e40837acbb6de1f344eff5c9fae1f372801af6e
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically identified as a malicious redirector. The document body, though partially corrupted, includes the same URL and a topic related to 'breast cancer screening guidelines 2018', suggesting a lure. The presence of numerous links to external PDFs, including a dominant host 'static.usrfiles.com', indicates a link farm strategy. The primary malicious URL is https://ttraff.link/wix?keyword=breast+cancer+screening+guidelines+2018, which likely leads to further malicious 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=breast+cancer+screening+guidelines+2018 In PDF document text
    • http://metovijox.fenianfear.com/uploads/1/3/2/7/132740708/tinogotasebodofusij.pdfIn PDF document text
    • http://gikoruj.glassfloatproject.com/uploads/1/3/0/8/130873791/vixomebutonud-mamezi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/23924c_6549e26c29f04d77bf677e22319df1dd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4c1554_caa7df3a88c84202984ad4586dd333a4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33c377_ec15e69b107d432eb75a3d1d50cac7c0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3e9e83_d5a71974302f4eaaa99798a613137bce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bfbc46_c3f08df682ef4afaa599162bd0f375f9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/defd8a_ee633aeacbfb4667a976219a98c8fed2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dbad32_10b8b714b2af4170902f7cce36206f5f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3ed1f_936db8f7bef640438dd3b466a05a831f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_4f9d7878fc5d424aa2ad22b1841f14e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a43ec6_b0bc44f2fae44df19012cae12935cd3a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e04390cbf4b34425b2d4dd5cdf6cf7f7.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

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_off00006961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6961 5448 bytes
SHA-256: cfaced369e7ce1c300d4eb0ff2ffb53d124537cae9030ade7e92b8277c501b5a
font_01_sfnt_off00007be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE6 10180 bytes
SHA-256: 7adb46ef67f2ffe4818e3ba70dc57099aaf386cf9b9decc4177f51f377ab6570
font_02_sfnt_off00009e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E9F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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