Malicious PDF — malware analysis report

Static analysis result for SHA-256 86694977ca52253a…

MALICIOUS

PDF

47.0 KB Created: 2020-08-28 03:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d01f510c58c03ca914931f34dde701c1 SHA-1: d067b93a5d97c03a03f17675f42b111d608d485f SHA-256: 86694977ca52253a643130295db95d560fa2a8b3c3346d66036c04b4c9793530
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or SEO abuse for malicious purposes. The primary redirector URL, 'https://ttraff.ru/pify?keyword=clasificacion+de+los+huesos+pdf', is flagged as malicious. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing PDF documents.

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=clasificacion+de+los+huesos+pdf In PDF document text
    • http://roruvetev.familiesfightingaddiction.org/uploads/1/3/0/7/130740522/150085.pdfIn PDF document text
    • http://ravikiri.evelynwalters.com/uploads/1/3/0/8/130874493/gesolapunedi.pdfIn PDF document text
    • http://files.fromeselwoodbowlsclub.org/uploads/1/3/0/9/130969960/serezoxegozibaf_dasowumilugaf_netolavifu.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/1/0429/8814/2743/files/2444760337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/45885428105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5073/6533/files/obi_wan_midichlorian_count.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1848/8741/files/a_smartwatch_to_read.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/gabekokonafagixemox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/bengali_to_english_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3698/0886/files/39937970997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/selaromikox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/gitiwum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/urbanismo_inca.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 1

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_off00006451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 4972 bytes
SHA-256: 57134bf7e3d35b3425c41465cdb6e2edf0f894b1ea6ecd96b13bc7a1d2335541
font_01_sfnt_off00007524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 13760 bytes
SHA-256: bd8601c57021526b04597ef4c63724bfa8172f56fc927c29d690d6ae869cdecf
font_02_sfnt_off00009f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F66 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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