Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e0d2ede6079ffe…

MALICIOUS

PDF

42.7 KB Created: 2020-08-16 00:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cead18ba2c788182a3e3025f27dffaf SHA-1: 29532324c9c6f5740966d6baea4b123b23f4ca25 SHA-256: 99e0d2ede6079ffedf2b7b549ad894f1ba94852111684cad728d64fb7e631d7f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, disguised as an application form. The primary malicious URL is https://ttraff.ru/pify?keyword=mp+b.+ed+application+form+2019, which likely leads to further malicious content. The document body text, though heavily obfuscated, contains references to this URL and other PDF links, indicating a social engineering attempt to redirect the user to malicious infrastructure.

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=mp+b.+ed+application+form+2019 In PDF document text
    • http://files.dregerracing.com/uploads/1/3/1/4/131453045/8d4573dd01b.pdfIn PDF document text
    • http://files.tungbrushph.com/uploads/1/3/1/3/131379678/karisujizoxotir-napovujade-getolipujoz.pdfIn PDF document text
    • http://files.en.sensoryum.ca/uploads/1/3/0/7/130738998/653aa6cb2e.pdfIn PDF document text
    • http://pelega.dammodelmanagement.com/uploads/1/3/2/6/132681737/zesoz.pdfIn PDF document text
    • http://files.connectivehealingservice.com/uploads/1/3/1/4/131438459/bb6761c.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/1/0431/1125/2132/files/48383444229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/4445530212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/dizago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/29576215780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/performance_characteristics_of_centrifugal_pump.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/79316040009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/93572574617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/pasar_archivo_a_word_online_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/45971211271.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_off000066f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 5784 bytes
SHA-256: fad3d23a72edc925ec6dee8127d484420c582981ef32644c04026e1beeadb0bd
font_01_sfnt_off00007a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 10408 bytes
SHA-256: fbf6a08acfb5b6fc31f3495bd973162d38bdff3223bd4a203f5e37aac14f9739

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