Malicious PDF — malware analysis report

Static analysis result for SHA-256 805a8e415ba62d9e…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 13:36:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfc399295500b8d7b2224ccd799dee13 SHA-1: ddd40f5cf718d45a8cfe6e9d5ed6b56770e33da5 SHA-256: 805a8e415ba62d9e958440b2c78402305d668b00b8ba16637ffe7f6da7011d5d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, many pointing to a redirector URL associated with malicious activity. The heuristic firings indicate this PDF is a malicious redirector and part of an SEO link farm, likely designed to phish users or distribute further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or trick users into downloading 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.com/wb?keyword=mindful%20eating%20script%20pdf In PDF document text
    • http://files.appalachianaxeworks.com/uploads/1/3/0/7/130739510/tazufoxe-wodigidowefer-wegufag-fovisikosolusur.pdfIn PDF document text
    • http://files.spiralofaccountability.com/uploads/1/3/1/8/131871433/janedisajitazoz.pdfIn PDF document text
    • http://files.christophercawley.us/uploads/1/3/1/3/131378990/zaxagonu_moredaneneb_gimomadetewogu_gijidereg.pdfIn PDF document text
    • http://files.maxtallentconstruction.com/uploads/1/3/1/0/131070160/jabasibirapofij.pdfIn PDF document text
    • http://files.wataworx.com/uploads/1/3/0/9/130969633/bemosanebukilamegok.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/1/0433/0687/7080/files/noviwuvado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/tawabakoneboki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/93140226276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/xurojebufuxemamekapakozep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/53105272168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/naruto_shippuden_episode_86_english_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4306/9845/files/72989441379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29876283886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/wikofivurozisuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8378/6392/files/thailand_train_map.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_off00005c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A 5328 bytes
SHA-256: 5072c69a79096976e61ee8e6d91222729994328149efcfdd6ca93ee8201d1040
font_01_sfnt_off00006e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E59 9792 bytes
SHA-256: 891eb781cf46b902270d8927094c832ca82de5505a3358e7a78bdddcd8859cd3