Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7f808948b9e45e…

MALICIOUS

PDF

55.4 KB Created: 2020-07-30 14:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dd4429bb9ea75090ce7648edc87c621 SHA-1: f165bfb3b145a3a841632a8f2ca4bc3f1dc36831 SHA-256: 7a7f808948b9e45e634e884a41cbc8b294de593b50c864095213ecc2f275e37d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm pointing to numerous Shopify-hosted PDFs, many of which are likely benign. However, a primary redirector URL, https://ttraff.com/pify?keyword=diagnostic+microbiology+scott+pdf, is identified as malicious. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or further malware delivery. No scripts were extracted, but the ML classifier strongly indicates malicious intent.

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/pify?keyword=diagnostic+microbiology+scott+pdf In PDF document text
    • http://files.snappycontentwriting.com/uploads/1/3/1/4/131437308/ffdee3.pdfIn PDF document text
    • http://files.maxdesigns.com/uploads/1/3/2/7/132740501/ladabevubuv-rododekuva.pdfIn PDF document text
    • http://files.launcestonmountainbikeclub.com/uploads/1/3/2/6/132695586/b62e817ba84ed5c.pdfIn PDF document text
    • http://files.gabysartgallery.net/uploads/1/3/1/4/131438423/490055.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/1/0432/4858/2820/files/kemogokubidipejade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/dirixom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/vuripi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/kezejemuxetoxenepasowilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/26550531286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/nivasifefusalivix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/77917311148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/47724144772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1109/6221/files/ximozevasixonazolosamefun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/17181021178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/xudodomovosigezas.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_off00009a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A78 5384 bytes
SHA-256: a3ddcc8ba5f85948d7f4233bbc1605837e0a022c71ebaf4638576a9244bceb9b
font_01_sfnt_off0000aca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACA7 10420 bytes
SHA-256: f56f5f1e0de2beb81605e1d2a389aee7aee21499e2348ffe75a64908dd06322b

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