Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9c2800cec65e8d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 08:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2296cbc44982e6bebe1bd184c718d818 SHA-1: ccc912df1c7dcc9bcf8c6cb9a0317f53ad805fb1 SHA-256: df9c2800cec65e8d21079719c4c127d4b185913e29550a219f3a464f884445a2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/wb?keyword=fraction%20to%20decimal%20to%20mm%20pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=fraction%20to%20decimal%20to%20mm%20pdf In PDF document text
    • http://viwilu.innovaspace.org/uploads/1/3/1/4/131437792/5111738.pdfIn PDF document text
    • http://files.washingtonstategoodsams.com/uploads/1/3/0/7/130775413/runenofoxifive_tetasulel.pdfIn PDF document text
    • http://files.ryanchiropracticclinic.com/uploads/1/3/1/6/131606343/zubogitefososotojiso.pdfIn PDF document text
    • http://nezofoke.sddragonboatrace.com/uploads/1/3/0/9/130969352/mapuwomogixoje_vazisevixatazu_wexebelux.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/1/0432/9229/5333/files/winrar_64_bit_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/kulagedegivupixifaxapigef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/61822924668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/mp3_to_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/88321029940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/cms_ed_medicine_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/xemuxusuditineza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/jamubalosow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/dokakumexitidizafiragi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/43967012634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/xefinakeluvo.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: highlandmillsumc.com 4 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_off00006306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 5080 bytes
SHA-256: ff4854948ff7bcddeaf294201edd75a28fc307e15c70e8f9f58707a44d4f32da
font_01_sfnt_off00007435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7435 10520 bytes
SHA-256: 63dc4b939f6f98feb94b2723771372f1794db6bc9606e5cf26474f649c9f7414

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