Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eca93a09a48240c…

MALICIOUS

PDF

35.2 KB Created: 2020-08-13 22:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 813d9b559b763bc39d81ced2aed0ee3c SHA-1: ae7afba8730ab5a7a37585279fe39cc360c626e6 SHA-256: 0eca93a09a48240c0b7df8ba5cf5fb43c85c5a81d1379785bc731176025a3231
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body and heuristics indicate a lure for free PDF downloads, likely a phishing or scam attempt. The primary malicious IOC is the redirector URL, which is used to funnel victims to further malicious sites.

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=castellan+physical+chemistry+pdf+free In PDF document text
    • http://files.pacificrimfoundation.org/uploads/1/3/1/3/131381553/filulapalelab_relilaso.pdfIn PDF document text
    • http://files.quizking.net/uploads/1/3/1/8/131871518/3d2020a97e.pdfIn PDF document text
    • http://files.tourism.myosceolachamber.org/uploads/1/3/1/4/131453054/jegititufavat_fawugife_notasixu_jafipakor.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/1/0430/9372/1255/files/accounting_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/lejusirubafuvodidis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/3500482808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/talk_incoherently_jabber_crossword.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/60469024877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/zediselo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/wumonajebuvabexigetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/842318731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/bowovavusunovedufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/68054945022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/vuwaxiremesakegadejimetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2197/1104/files/acupuncture_point_combinations_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9021/3019/files/aptitude_test_book_ethiopia.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_off00004c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1F 5404 bytes
SHA-256: 199a0e60d4b2ad12db33321e44d27434e62701c6110ee65e691306102fb93d85
font_01_sfnt_off00005e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E51 9876 bytes
SHA-256: cd75b6e2a1adeaacdb1555dbefe3b4459d9434b34972ee9a41cce6d567c74594

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