Malicious PDF — malware analysis report

Static analysis result for SHA-256 75865af4f95e35ec…

MALICIOUS

PDF

38.0 KB Created: 2020-08-17 12:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4451522acc5e6aa5bd7ad09571602cf SHA-1: 7710f1987f9bfbfc10cae9e18e5dacf0ad6b5328 SHA-256: 75865af4f95e35ec251318be171c80ae9c84b142c119d7a4d63bc535fa6c85ea
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, indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.ru/pify?keyword=best+self+company+pdf, which is likely used to redirect users to a malicious site.

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=best+self+company+pdf In PDF document text
    • http://files.altcaresolution.com/uploads/1/3/1/6/131637365/josobizogebabiw.pdfIn PDF document text
    • http://files.domhowell.com/uploads/1/3/0/7/130775172/konedededudogozuf.pdfIn PDF document text
    • http://tapubosa.kalasimports.com/uploads/1/3/1/3/131379935/fawaxediba-weved.pdfIn PDF document text
    • http://files.energycyclingclub.ca/uploads/1/3/0/7/130739651/taguga_wufujiwigata_vekipokeruwu_nobutido.pdfIn PDF document text
    • http://files.carmineruddy.com/uploads/1/3/1/0/131070983/kuvikelobagip_xadufukin_tufipitekipi.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/1/0427/6856/4380/files/87469457517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/rifoxijubewekuvadomel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/2020_monthly_calendar_editable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/sandesh_news_paper_surat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/cancer_mammae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/anakin_skywalker_midichlorian_count.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/xokalifikomubulodug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/pdf_file_reader_filehippo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/stardew_valley_furnace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/jepesaturukigi.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_off000057bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57BC 5356 bytes
SHA-256: a8c10d29799982cf55b6bb378a1b5f3d24f47b1a2f594fd42a100d87ce6b9a5a
font_01_sfnt_off000069e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 9888 bytes
SHA-256: 967a2b332a6784f4f23df9fec62bb85e47b036c3504ce5f3ae4abf348a948a16

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