Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f26bc368812828b…

MALICIOUS

PDF

56.2 KB Created: 2020-08-19 09:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1123974dbf9fa21c25ff3db4d71294ff SHA-1: 0a487d681d40b8cc3159118f7d9fa1f590207503 SHA-256: 6f26bc368812828b925fc00ab9e1b497e836839aa7199ec62b5894df7e8162cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=teacher%2527+s+guide+grade+10+wellness+massage', is used in an SEO link farm lure, suggesting an attempt to trick users into downloading potentially malicious content. 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.com/pify?keyword=teacher%2527+s+guide+grade+10+wellness+massage In PDF document text
    • http://files.paper-and-light.com/uploads/1/3/1/3/131380288/jatodasil_gikujarupa_marizuwifas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/iit_jee_advanced_mathematics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/anemia_microcitica_hipocromica_pdf_adulto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9931/5610/files/fixedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/gavujexumilel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7506/6273/files/free_download_pmbok_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/truncate_decimal_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/abdomen_and_pelvis_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4899/8811/files/how_to_mod_skyrim_ps3_without_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/jalum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9321/3855/files/diabetes_mellitus_guidelines_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/atlas_of_eocene_planktonic_foraminifera.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 5316 bytes
SHA-256: f9c905a9012e5088c163f6274cacbca0f7dc235be745c52d5b61145ebacb644a
font_01_sfnt_off00009ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC9 13208 bytes
SHA-256: 222bf72e27a4a0eddb837ad85e302035be199c3a8c9c11aa332a2aceb08c7b88
font_02_sfnt_off0000c51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC51A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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