Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8f1f020b4b8772…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 22:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47a7833dd01e5b5c2b76f66deed81547 SHA-1: 2448d79091a7eda94af55fd50e5f94625ca2de82 SHA-256: 8e8f1f020b4b877278746b7929c20202d3eb53446f2e8d5ba5903f3215e08beb
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO link farming or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=segment+addition+postulate+practice+answer+key'. The document body, though heavily obfuscated, contains text related to 'segment addition postulate practice answer key', suggesting a lure to trick users into clicking the malicious links.

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=segment+addition+postulate+practice+answer+key In PDF document text
    • http://files.playfulwonders.com/uploads/1/3/0/7/130739916/gefufozeti_marulurazoki_josiridanosef_fuxoriva.pdfIn PDF document text
    • http://jozifo.maci-mcs.org/uploads/1/3/1/6/131606490/kidafixilapaje.pdfIn PDF document text
    • http://ruweworev.worldswarmestsocks.com/uploads/1/3/2/6/132681579/ditasiwiwodirepona.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/1/0437/1405/2247/files/descargar_caballo_de_troya_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/gamujatatajevexevimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4734/files/jadipevidixomitonojuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/tefulinedubolivutin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3661/9431/files/48881594767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/vilamera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/comprehensive_mathematics_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/jevipifugalibewivemoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2744/5413/files/67521404574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/kefivaluxerazazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6078/1475/files/pharmacy_dilutions_worksheet.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
🗂 Part of campaign: buttonwoodheights.com 3 samples

Related samples 3

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_off00006ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE5 5756 bytes
SHA-256: d0e8be46629d690601b3b27b8edd40a3e2eb345a74ccfc13940641d746d99cc1
font_01_sfnt_off0000807b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807B 9992 bytes
SHA-256: 8388da576105559a6aeeb65ffd10b06d1a8ceca1fbcf8c59f5f1d5eb46970465

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