Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1759f0dfdbb3fc…

MALICIOUS

PDF

39.9 KB Created: 2020-08-05 23:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a24a4c73b2bb9ac25a4e5b631bdec83e SHA-1: a9c4973a7c37c6932c92aa707182dd6a43184d27 SHA-256: fb1759f0dfdbb3fcda1056d4f2314ae0439d4a6f72a43de35c05455dfb028c71
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=article+partitif+fle+pdf'. The presence of a link farm suggests an attempt to artificially inflate search engine rankings or distribute malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to infer a malicious redirection attack pattern.

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.ru/pify?keyword=article+partitif+fle+pdf In PDF document text
    • http://munawivol.arbutuspta.org/uploads/1/3/0/7/130739309/jakibekuna.pdfIn PDF document text
    • http://files.rakshitestates.com/uploads/1/3/1/4/131453171/dowiwefo_levubasewafo.pdfIn PDF document text
    • http://files.myguillermofloresuagro.net/uploads/1/3/1/4/131407067/duzuzanuxawomoz.pdfIn PDF document text
    • http://suwixe.haptotherapiekoningsweg.nl/uploads/1/3/2/7/132741334/marejuled.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/1/0431/9982/4032/files/77212896360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2758/5445/files/noxolixivalufojomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/fularujubejumosejijuligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/matrix_screen_saver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/xasezomutimeniwixojejovuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/precalculus_with_limits_larson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4728/1062/files/teratizuxatutugofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3711/1958/files/lebovulogekewoxuruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/calling_sehmat_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/61529944385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/jemusunebizib.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_off00005e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E37 4960 bytes
SHA-256: d481be7eba92644dd62ba08ca734b918ebc333c59d1b452a448906b8e17a6efe
font_01_sfnt_off00006f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2C 10500 bytes
SHA-256: e4f8a8d93b2cb43680c261dc1598c6a78a902762c1d4d62878ac8fad24bd610b

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