Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20b713b006c5e65…

MALICIOUS

PDF

34.8 KB Created: 2020-08-11 09:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c092312207ddf50ec6613900e0c72b4 SHA-1: c9abe5669459e383728fd500c05028f202e2001f SHA-256: d20b713b006c5e6565a73af38ca0fa8ee90c21054b618d00cad410d1de08ec00
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as educational content, specifically targeting 'everything maths grade 12 textbook pdf'. This link, 'https://ttraff.cc/pify?keyword=everything+maths+grade+12+textbook+pdf', is designed to lure users into clicking it. The document also features a large number of embedded links to other PDFs, indicating a link farm strategy to potentially obscure the malicious redirector or distribute further malicious content.

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.cc/pify?keyword=everything+maths+grade+12+textbook+pdf In PDF document text
    • http://files.alliancerestorationblog.com/uploads/1/3/1/4/131437649/vujemiliro.pdfIn PDF document text
    • http://files.toppinggeography.com/uploads/1/3/1/6/131606672/fanivupono.pdfIn PDF document text
    • http://files.aboundingfaithnj.org/uploads/1/3/1/3/131383771/xosorizin.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/1/0431/9779/2420/files/xepexita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/75936190516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/ximim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/tasedexiwapofowukixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/narokivosuxobasamevagup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/bioenergetics_grade_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/ashish_arora_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/zetesobokojoropenejunid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/xukomuzapeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/surat_yasin_latin.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_off00004964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 6000 bytes
SHA-256: 4534d8df419acb66c4e3acb409d0748655e1a7ab5107e0dcd12e27119d515d17
font_01_sfnt_off00005dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 9600 bytes
SHA-256: a50530e979a0590cd148421c3b93ddbf1ed21bb0bcfdef2bbe0e8de3d5eaae56

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