Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8005efa6f76f9c…

MALICIOUS

PDF

50.5 KB Created: 2020-08-05 06:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a0c46417ae9ca1ff6523467aaeb9984 SHA-1: 4c84c87979376ba70c8e07dc987a619be51405e2 SHA-256: bf8005efa6f76f9ce7678f3479bf6f96ae64733eebf290996c3b198891d48ecc
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to Shopify-hosted PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=bernanos+pdf+gratuit`. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the same URLs.

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=bernanos+pdf+gratuit In PDF document text
    • http://files.alex-pearl.net/uploads/1/3/1/0/131070678/tesizenuzalu_kojuluxiwa.pdfIn PDF document text
    • http://files.killforeden.com/uploads/1/3/1/4/131437513/numepuzakinolevok.pdfIn PDF document text
    • http://files.jvrealtyandhomeloans.com/uploads/1/3/1/0/131071167/jepawoxedemobij.pdfIn PDF document text
    • http://files.everyview.net/uploads/1/3/1/3/131379894/8011484.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/1/0433/0687/7080/files/47475247643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/87556419310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/3270446421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/fajidupiravanezewoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/dilanigafuvinugegigukos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/tuzenij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/world_map_without_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/related_literature_on_factors_affecting_academic_performance_of_students_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/las_categorias_gramaticales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7226/6138/files/xubodekarizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/turataparizagexidogokofej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/51377646336.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 5

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_off00008489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8489 5224 bytes
SHA-256: 4ac7b9ea3ddb0af3721a3421f995fd9f8aa365ea9145e7c4f43fa3b75c4f5928
font_01_sfnt_off00009662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9662 12056 bytes
SHA-256: 0d19d88858b2faad033c96a3842e1e6250ed2830509f23a8916af7ddc6ed17bc

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