Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fc8aa5f8852f33…

MALICIOUS

PDF

42.9 KB Created: 2020-08-13 21:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a4b898b8115b1831154cb75632687a3 SHA-1: d6b9da0d68baa5e6eb10d2b626a0d32c3cafef61 SHA-256: f9fc8aa5f8852f335b5eb8549f8ebe18536b25e9d80f8ba9acc6004191c47c10
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=5+characteristics+of+useful+information'. This suggests the document is designed to lead users to malicious content through a link farm strategy. 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.cc/pify?keyword=5+characteristics+of+useful+information In PDF document text
    • http://files.ohwhataluckyfish.com/uploads/1/3/0/8/130874276/duvakumaba.pdfIn PDF document text
    • http://files.gbresources.org/uploads/1/3/1/4/131453598/gunegonadon-kuberusewixag-jategigemeguze-losuko.pdfIn PDF document text
    • http://files.be-responsible.org/uploads/1/3/0/7/130775712/dapezuzo_vorulaxenufu.pdfIn PDF document text
    • http://sovup.globalwanderertravel.com/uploads/1/3/1/6/131607163/2bcce521c.pdfIn PDF document text
    • http://files.lisalmiller.com/uploads/1/3/2/7/132710711/gunedobiwuzedewuxe.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/1/0438/2189/1746/files/geankoplis_transport_processes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/pisuwis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/23350430961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/46252339896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/wix_oil_filter_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0835/0619/files/medical_books_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/31789872164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/92299614227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/capitales_del_mundo_por_continentes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/fixovu.pdfIn PDF document text
    • https://www.cancer.gov/coronavirusIn 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 5

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_off00006a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A57 5152 bytes
SHA-256: cdcb2e9d658131a07b81271d1f138611d4e11617ffe0c3c5dea9d25b559c744e
font_01_sfnt_off00007bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 10124 bytes
SHA-256: a73543a5326fe3100a59e1879f332117b5509680c51bbfdd2b1643e4e81ab9f7

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