Malicious PDF — malware analysis report

Static analysis result for SHA-256 775674851a5ec3d3…

MALICIOUS

PDF

53.0 KB Created: 2020-07-31 08:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: caba52c0058e992ca1668f8758fbf3fb SHA-1: 50f2184795669e6676109ff7bc71800df61e85e2 SHA-256: 775674851a5ec3d3a1b8a6793ae50c9ca303d1d157c215d6e2f98b10a5cb171e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious SEO link farm and redirector infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=causas+de+hiperaldosteronismo+secundario+pdf, which is flagged as malicious. The document's structure and embedded links suggest a phishing or scam attempt to trick users into visiting 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=causas+de+hiperaldosteronismo+secundario+pdf In PDF document text
    • http://files.viktorcage.shop/uploads/1/3/0/7/130738572/469e63f.pdfIn PDF document text
    • http://files.trebalmusic.com/uploads/1/3/2/7/132741339/figogoriro-voziriz-dejijuvur.pdfIn PDF document text
    • http://files.zeroinfections.org/uploads/1/3/1/6/131606165/7481829.pdfIn PDF document text
    • http://files.andrephotography.net/uploads/1/3/0/8/130814397/moxibudepa.pdfIn PDF document text
    • http://files.shoplockettlashes.com/uploads/1/3/0/7/130739116/3332840.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/1/0436/0853/9299/files/laxafodorawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/rawag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/sisebusaxiwipavosejeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/neneparosasivikavojuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/lilasaxubum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/keposenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9557/3158/files/jupibereridapisideb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/nulapuwelis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/17437747179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/dabedetubeges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0831/7850/files/navikubodim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/fokosezetavavotida.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_off00008fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDC 5300 bytes
SHA-256: 6a9ca0dd2b8f461958e2346b657de998f73578b50528ca8140df26b3d6f989da
font_01_sfnt_off0000a1b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B2 11228 bytes
SHA-256: 771ce8a183c40bfc2d651fcf783a452bb9bb575f42794612bd78ac8ac46dab25

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