Malicious PDF — malware analysis report

Static analysis result for SHA-256 511d648183172d9c…

MALICIOUS

PDF

34.6 KB Created: 2020-08-10 01:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57717136c983a02d844584e31e947103 SHA-1: 3b41eb67e58ac4ed85d170efc3f0a56ff6b8388e SHA-256: 511d648183172d9c623ef0ed7e4093e600e845f54c62d81c307d7740a38cafb2
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links pointing to other PDFs, some hosted on Shopify. The primary malicious URL identified is https://ttraff.ru/pify?keyword=biomagnetismo+pdf+download. The document body contains garbled text but includes the malicious URL and keywords related to downloading PDFs, suggesting a lure for SEO manipulation or further malware distribution.

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=biomagnetismo+pdf+download In PDF document text
    • http://files.ketooozy.com/uploads/1/3/2/6/132695615/pamalogipufujaz-milikokuzolun-regozel.pdfIn PDF document text
    • http://files.robynveal.com/uploads/1/3/0/8/130874477/nasosit_siberimuwukabol.pdfIn PDF document text
    • http://files.salonelitemn.com/uploads/1/3/1/3/131398497/ca7212.pdfIn PDF document text
    • http://files.madridistasatl.com/uploads/1/3/1/6/131606360/jolonukowe_goxoxaferi_rimanotaxave_zidotepuwe.pdfIn PDF document text
    • http://files.waveformedtraining.com/uploads/1/3/1/4/131437037/1494082.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/1/0436/1207/8243/files/63842972596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/15966562830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/12122288293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/13290304527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5103/1464/files/injective_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/titapotexovugerumoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7649/9096/files/domujoluketaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/technical_interview_questions_for_ece_freshers_with_answers_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/14649349909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/52846891377.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_off00004ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE0 5404 bytes
SHA-256: 4e2cd8529260b9c5b960589d0577f83f6d22d2529256bbfb8614fb21fe5f4761
font_01_sfnt_off00005d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4B 9540 bytes
SHA-256: f2f729ffc3c972b3791fadb6548d78cf7452f7b3992201706b155156278750c3

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