Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba2909fbd583ff6…

MALICIOUS

PDF

60.5 KB Created: 2020-08-07 09:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5effad363fa69c260ec7fd2133305b87 SHA-1: 4f904ea586d71dd2d31001a623d405d797b58ebb SHA-256: eba2909fbd583ff6ddb5e8422033feaca18210008ec552f32ac3669e3af52cbd
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a 'Cardiovascular examination pdf'. The link points to 'https://ttraff.cc/wb?keyword=cardiovascular%20examination%20pdf', which is a known malicious redirector. The document also contains a large number of links to a PDF link farm hosted on cdn.shopify.com, likely for SEO poisoning or to obscure the malicious redirector. No scripts were extracted, but the presence of a malicious redirector and the lure suggest a phishing or credential harvesting attempt.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=cardiovascular%20examination%20pdf In PDF document text
    • http://files.carpenterschool.org/uploads/1/3/0/7/130776578/vusokivabe.pdfIn PDF document text
    • http://files.trendyacresboutique.com/uploads/1/3/0/7/130775361/xukokemuwobeg-sesimikumo-furode.pdfIn PDF document text
    • http://files.clcem.net/uploads/1/3/1/8/131871658/resukenutuwimi_womekukamo_tukurinajuxemes.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/1/0439/7616/3486/files/93316445741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/96270954807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3822/9158/files/nedodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/sufjan_stevens_chicago_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/71465394381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/topulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/cowl_of_fluid_machinations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/brain_games_for_seniors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/mejeposufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/inverse_trigonometry_formulas_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1604/2142/files/21879824139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE5E 5336 bytes
SHA-256: 5470a3c62435ba91b868c8bed5a4cb5cedb0fd5df6b126fd3b4734c3a389b09e
font_01_sfnt_off0000c075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC075 10812 bytes
SHA-256: 6467ebd511731813c6fc829b1bb8423d29dbe5a65de738b4d2fbc464335c69fa

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