Malicious PDF — malware analysis report

Static analysis result for SHA-256 7228b9552d14f908…

MALICIOUS

PDF

45.9 KB Created: 2020-08-07 06:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66fb459d0c8ee0d828a4e066a9843cad SHA-1: 222fe75de9b1056a9bc500bcea22e9896f9da2f9 SHA-256: 7228b9552d14f90859803c9c2fa4607fc6a767a51a738c7bbb37e7e2916cf8c5
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=infrared+spectroscopy+absorption+table+pdf', suggesting a lure for free content that redirects to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=infrared+spectroscopy+absorption+table+pdf In PDF document text
    • http://files.citydogsrescuedc.org/uploads/1/3/1/4/131437977/bomuvawixuvosa.pdfIn PDF document text
    • http://dazite.secondchancedogrescueofiowa.com/uploads/1/3/1/3/131398560/kaxoginix_punuxebejodir.pdfIn PDF document text
    • http://files.bamboozlestraws.org/uploads/1/3/1/4/131454581/2882734.pdfIn PDF document text
    • http://files.vitaresources.net/uploads/1/3/1/4/131453151/wuxeku_pusobiw_bosojiwiwo.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/1/0434/4155/3575/files/98501617501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/19810684475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/breakup_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/tofemabata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/zodekutufolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/state_kirchhoff_s_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/moguzofiziduwezorixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/rudram_chamakam_tamil_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/nj_transit_bus_schedule_191.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 4

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_off000068d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D3 5328 bytes
SHA-256: 42814d5fe8b1977fa521ff998d0be5914e37b77a655dfa9b5d7e58827635c4af
font_01_sfnt_off00007b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B07 15136 bytes
SHA-256: 0f8dd5b957296337309784dd32ccb1d944d50f66b17a0ab924be174d32a7c5c0

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