Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1f9392bbbf7234…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 22:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b9ac79525763b5a87ebda177e40d7ed SHA-1: 6a50343c7b8f90367ac73e89ecab4f519ad48c57 SHA-256: df1f9392bbbf723401caf9f036ec1880b40102c785493856aabd4a0e1ba6fc5b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links and text that suggest it is a lure for a furnace manual. Heuristics indicate it links to known malicious redirector infrastructure and hosts a large number of SEO-optimized PDF links, likely to improve search engine ranking and attract victims. The primary malicious URL identified is ttraff.ru.

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=york+furnace+manual In PDF document text
    • http://files.muzikale.nl/uploads/1/3/0/7/130776646/1f0b28.pdfIn PDF document text
    • http://files.sensibleshock.com/uploads/1/3/2/7/132740479/vasesejakukek_faxej_lelikam.pdfIn PDF document text
    • http://files.fittingroomligonier.com/uploads/1/3/0/8/130814672/sodumavasoso_sugenufefigu_tinivotosuna_sezomojodupebe.pdfIn PDF document text
    • http://files.torgbrewery.com/uploads/1/3/1/6/131606605/5a60b.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/1/0434/0849/0663/files/kivetefapaganaruligadak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/lidukomot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/65276325447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/19414020583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/rajaxadapowelofabiromolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/77156057376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/89087188928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/48004650759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/lisak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kivamusefelozadadazub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/40274946225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/66685469838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/poxiz.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 8

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_off00006f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 4872 bytes
SHA-256: b8564dfc02041e01f794d825c833a3932872d6f2322482e0792989558bb6c7d2
font_01_sfnt_off00007feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEB 10032 bytes
SHA-256: ed95cf49dbdb59c831f6ff3ceec42b7d957556d1e61a7013ba2612ace485b420

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