Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc89eac709221be6…

MALICIOUS

PDF

37.2 KB Created: 2020-08-14 10:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f72a1a3422978353530feaf13e5f893 SHA-1: ae16e7b56d147ba077a7305702c5eaeea2cbec90 SHA-256: dc89eac709221be66755934a7dbcc056c57c2f1e93b852e2d6caf8c99091c99f
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, disguised as a kitten feeding guide. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious.

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=royal+canin+kitten+feeding+guide In PDF document text
    • http://files.soundhorseandhound.com/uploads/1/3/1/8/131858791/6240824.pdfIn PDF document text
    • http://deduz.wmclb.org/uploads/1/3/0/9/130969060/6929170.pdfIn PDF document text
    • http://files.sustainablewaresonline.com/uploads/1/3/0/7/130775992/golud_nazegugowanawe_zenino.pdfIn PDF document text
    • http://zugibarek.4thdvpanecs.com/uploads/1/3/1/4/131452903/bbd2524c1b82685.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/78491346320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/tajifubuteso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3757/files/88912859460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/wediwevovakitej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/likelipimuxamuwegof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/calculus_a_complete_course_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/bendito_seas_seor_partitura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/34740876423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/2532408263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/types_of_articles_in_english_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/surrealismo_caracteristicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8116/1111/files/36558410495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/99321134793.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_off0000543e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543E 5088 bytes
SHA-256: baacabeea1bbaec2b9f7516d6f339e4e2429d14953c85d1e846b83fe768a4d8c
font_01_sfnt_off000065af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AF 10096 bytes
SHA-256: a7c89b9f33b25716f36a90b0d3d4654a986c997292e8d1f91828a8d851f3ea89