Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99a6b7b84ca5bb9…

MALICIOUS

PDF

43.7 KB Created: 2020-08-15 01:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05544a7dbe95670b2b1676f53cff22c1 SHA-1: 1a1a363e4e9b25c585238942344cc2b0dd100360 SHA-256: d99a6b7b84ca5bb953b22b502ca765dbe48923854440879f48d8390a05123e07
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, https://ttraff.com/wb?keyword=realism%20and%20humanitarian%20intervention%20pdf, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or credential harvesting. The ML classifier also strongly indicated maliciousness.

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=realism%20and%20humanitarian%20intervention%20pdf In PDF document text
    • http://files.worldprayingcommunity.com/uploads/1/3/1/6/131636808/4993932.pdfIn PDF document text
    • http://files.mtadamshoney.com/uploads/1/3/0/7/130776180/6067542.pdfIn PDF document text
    • http://files.johnjzelenski.com/uploads/1/3/2/7/132740580/mutejexadapuxodan.pdfIn PDF document text
    • http://gufaso.worldheartsfairtrade.net/uploads/1/3/1/8/131871721/joserobulisove.pdfIn PDF document text
    • http://fegopaw.lagrangehorse.com/uploads/1/3/1/4/131437792/juxovovana-gotabive.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/1/0439/2845/3288/files/sibug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/67768954626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2108/0475/files/eicar_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/mivodekilijitulijorima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7242/9980/files/temavesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2478/4283/files/92664581346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/14380280374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7056/2209/files/goku_vs_android_13_spirit_bomb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/mechanics_of_materials_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/guwezanupunepopibaperoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/52102873020.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 3

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_off00006ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA9 5348 bytes
SHA-256: fb36a30d90817e363231b16cbcbc7eb2ef23081094f4befd19fd65b2788585a9
font_01_sfnt_off00007eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB0 10336 bytes
SHA-256: 6c91cf3e7b33cbb747b4caf35a68f5cdedce8ae7b9999b9bb795a720054ceb5d

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