Malicious PDF — malware analysis report

Static analysis result for SHA-256 b407cf7fde562697…

MALICIOUS

PDF

31.8 KB Created: 2020-08-03 01:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a7597279a1691f539fa6f372de0f464 SHA-1: e46d4173e9271e8e7a445a5ca27d8195bcfa083d SHA-256: b407cf7fde562697c1e305294929a537a8f6a2c05384e6b39517245be158a083
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the redirector. This suggests a phishing or scam attempt, likely aiming to lure users to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=ryobi+18v+trimmer+manual In PDF document text
    • http://files.madcityparagliding.com/uploads/1/3/1/0/131069987/1700156.pdfIn PDF document text
    • http://files.teachforkosova.org/uploads/1/3/0/7/130739542/guwijumebono.pdfIn PDF document text
    • http://files.edwardsartstudios.com/uploads/1/3/1/1/131163832/7862060.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/1/0430/4296/3613/files/17106398895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/regelazufupixanogok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/zetoxekipapuwisagug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/ragarozijow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/37372905445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/38444431304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/fate_zero_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/xemexeribireremawisiginob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/219451632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/tamudixajibeza.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
🗂 Part of campaign: hauntedmichigan.net 3 samples

Related samples 4

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_off00004241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4241 5208 bytes
SHA-256: 5c63ad77a8969d08e3debaa6001b9cc01d759fcf1c7c103c0ca80b31bdb85510
font_01_sfnt_off000053f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9 8960 bytes
SHA-256: c680977929b39e4b367374ad1518e8292b35223e2d5a77b72f1bc3d019fa9837

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