Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1de3bc4b48f18e…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 05:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca9da865f052e58fc9f3cce742aff44a SHA-1: a61352d57be6325c1e4572d38b4af36e4cdae13f SHA-256: 0a1de3bc4b48f18e6e04023f3b92c75f167e31ae2eeb8de7a128f6f21d479198
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector infrastructure (ttraff.cc) disguised as a free software download lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to distribute malicious content. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely for further payload delivery.

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=aptana+php+editor+free In PDF document text
    • http://files.rapidrealestatevideo.com/uploads/1/3/0/7/130739280/nameki_pomepopujanu_suguxipir_selulimer.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/1/0432/6660/5209/files/nalemiminupivadezikuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/nufitibita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/beritepasavugatomexudiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5403/1270/files/54908682041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/jutizulawojajigesipatewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/python_programming_language_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/tujerakenigesokazegul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/fapuwog.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 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_off00006386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6386 4908 bytes
SHA-256: e6fb9511309ff505a6365bb07bb25d3db3b5dbe30d4fa6dc6d2c92618ddc3865
font_01_sfnt_off0000742c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742C 10012 bytes
SHA-256: b07490876a3c1ab35a1ad459323049b9d2fb2bcfe131ff21009d2f63a73f1c18

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