Malicious PDF — malware analysis report

Static analysis result for SHA-256 f220e9255b409ba5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-27 13:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 109c5bc144f569842b06f281d8c2a7e8 SHA-1: b21ef5e7a35c454e7ff5f5add4a1559e013b4f6d SHA-256: f220e9255b409ba56a26a5db858d6bf08223a1d275f90458fc5af676cd744c26
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=ensoniq+mr+76+specifications'. Another critical heuristic indicates a PDF link farm, with many links pointing to external PDFs. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious redirector URL and several Shopify-hosted PDF links, suggesting a lure or redirection mechanism.

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=ensoniq+mr+76+specifications In PDF document text
    • http://lolewuke.papercranesoaps.com/uploads/1/3/2/6/132683130/kuwesobo.pdfIn PDF document text
    • http://kimolam.symbiosiswellbeing.com/uploads/1/3/2/6/132681337/8453760.pdfIn PDF document text
    • http://files.stjosephwestphalia.org/uploads/1/3/1/3/131378918/kuwagokofijatuw_tidoxazu_lilati_movirusurug.pdfIn PDF document text
    • http://numuwulir.information4felons.com/uploads/1/3/2/6/132695601/sexulotarawu.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/1/0434/2136/8482/files/popliteal_fossa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/jaiib_accounting_and_finance_for_bankers_short_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/preventive_maintenance_report_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2686/6599/files/loravo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/all_about_me_elementary_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/45096348294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/motu_patlu_cartoon_video_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/53044019529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/38556417584.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_off00006336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6336 5448 bytes
SHA-256: 0d8d5f0944b86c2a0cbfc44b73f832432bda5f54eeb863152d00b7ce5267d22a
font_01_sfnt_off000075ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AE 10364 bytes
SHA-256: 971b218914b5573d5980e9fce4166e387a81534b382053de523d0840c72ed95f

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