Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbeef8faa5853de…

MALICIOUS

PDF

46.0 KB Created: 2020-08-20 06:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c655d2c16dc125cc4cef893376be362d SHA-1: 1ca1cc3c702a6afb68508c3f3e66982dab2eeaa3 SHA-256: 6dbeef8faa5853de54f1dac3c23ae8022491513690fd434d7033bef59fdbd111
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for phishing or scam content. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Fitbit blaze hr manual'. The presence of numerous links, many pointing to Shopify domains hosting PDFs, suggests a link farm or SEO manipulation tactic to distribute the malicious content. The ML classifier strongly indicates 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.cc/pify?keyword=fitbit+blaze+hr+manual In PDF document text
    • http://files.nnft.ca/uploads/1/3/1/3/131378990/4210920.pdfIn PDF document text
    • http://lupejek.jci-gardena.org/uploads/1/3/2/6/132680813/2489f40d0d4ff.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/1/0435/3789/1477/files/80889012176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/8369153582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/lexisnexis_butterworths_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/install_git_with_homebrew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/vewixokivatuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/free_video_loops.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/pemuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/nurosubewodajavob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/99083217791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/jesus_bleibet_meine_freude_violin.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_off000077d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 4892 bytes
SHA-256: 5cb01e73a2c1511da9349b6382493cba7e5bdb983264cf681fd6138b0e81d46f
font_01_sfnt_off00008856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8856 10172 bytes
SHA-256: 7b88b6758bdf18a30035c0a1a4febab145cd2fbc18fd132a595cdb725607fdfc

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