Malicious PDF — malware analysis report

Static analysis result for SHA-256 9533b707ffed1a9b…

MALICIOUS

PDF

44.1 KB Created: 2020-08-26 01:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfa35d5b8a3206e4dd344c462a2b6a31 SHA-1: 9aaebe5d880a7ba70539c01be17dc2bf86601ac5 SHA-256: 9533b707ffed1a9b71e3c64665bfb31585de689e71916ad849c75a1fa6af7463
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=random+mouse+maze+solving+algorithm'. This suggests the document is designed to lead users to malicious sites, likely for phishing or to download further malware. The presence of many external PDF links also indicates a link farm strategy, often used to improve SEO for malicious sites.

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=random+mouse+maze+solving+algorithm In PDF document text
    • http://files.rachelmambach.com/uploads/1/3/0/7/130775220/togurufasaziren.pdfIn PDF document text
    • http://files.bobbijasayphotography.com/uploads/1/3/0/7/130740367/b69df043ac68e.pdfIn PDF document text
    • http://files.riversidetreeserviceco.com/uploads/1/3/1/8/131872015/vadigonipivuxubako.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/1/0429/4973/8650/files/99904884237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/libro_de_como_hacer_aviones_de_papel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0620/3803/files/59588215847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5680/8615/files/39665298709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/networks_an_introduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8765/files/benchmark_advance_weekly_and_unit_assessments_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/fivevisapugelifafizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3143/files/9820277308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54903558396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/waposalirodepenudux.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_off00006eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 5356 bytes
SHA-256: c12a4bb92c18524e473928436167e49c8d30b5b2b2f34cd4384a3202ab9b2982
font_01_sfnt_off000080c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 10212 bytes
SHA-256: 4dff5c3a492cb7e54f783e55f26cc6226afb6a61fbdfca473f6b1cf10b3e025a

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