Malicious PDF — malware analysis report

Static analysis result for SHA-256 7811a960c7cb7a0f…

MALICIOUS

PDF

55.5 KB Created: 2020-08-10 03:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf08c781d0797287d2e49d8c50e20e62 SHA-1: b116d58eb68d6cd11c511e8082dc44654ea023bc SHA-256: 7811a960c7cb7a0f9b8480066cdf436c7cddf7384edb3afc7f600ef23085497d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded link structures suggest a phishing attempt, likely to trick users into downloading further malware or visiting malicious sites under the guise of 'free downloads'. The ML classifier strongly supports the malicious verdict.

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=science+of+accelerated+learning+pdf In PDF document text
    • http://files.heavensentchihuahua.com/uploads/1/3/1/4/131413678/9801299.pdfIn PDF document text
    • http://files.yogaweave.com/uploads/1/3/0/7/130775429/pudadewuxago.pdfIn PDF document text
    • http://files.girlfriendsbudget.com/uploads/1/3/1/4/131452740/gozomeramomejik.pdfIn PDF document text
    • http://files.manisha-sharma.com/uploads/1/3/2/6/132695615/sekogiguvon_sibinafupupalup.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/1/0428/9455/7351/files/46452002182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/30054492921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/supexeroxexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/xuzurupepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1057/1940/files/mapa_municipios_madrid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/95689951206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/kibexadoximedoxuwerelixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/76814547131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/buvibugadomeraverizotujow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/porapirupidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/91080577568.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9F 5248 bytes
SHA-256: 7b88049271cfa2b4531a4b17d1fa836ffc9d89ddd8824aa96d02806c266184e7
font_01_sfnt_off0000af8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF8C 9824 bytes
SHA-256: 7f0923f04e75a5f97f30a1ef0037c8731eef7abd34e8c61d3f88b85eefc11fa3

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