Malicious PDF — malware analysis report

Static analysis result for SHA-256 84dd637f0a33e489…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 07:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39eb48e81db0728ff87b0aab7f8aadb0 SHA-1: e0f09e131bf5f501b176706a5a9183c4b4cffa2f SHA-256: 84dd637f0a33e489bf18c432b211a90c7046a1107b7375a2d1d10366b00914cb
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting an attempt to lure users to malicious infrastructure. The presence of a large number of external PDF links also indicates a link farm, often used to improve SEO for malicious sites or to distribute malware.

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=medical+tourism+report+pdf In PDF document text
    • http://files.blueridgepokemon.com/uploads/1/3/1/3/131382387/pobujabalofek.pdfIn PDF document text
    • http://files.ridgeandvalleyforest.com/uploads/1/3/0/7/130775017/6ac8ac68543e.pdfIn PDF document text
    • http://files.pauljhamel.com/uploads/1/3/1/4/131453684/movupezoxobuviwaj.pdfIn PDF document text
    • http://ropagidi.dorispinks.com/uploads/1/3/0/7/130776485/govoruwafolinonafik.pdfIn PDF document text
    • http://files.alayorkritepha.org/uploads/1/3/1/6/131606694/fopotenokavej-lomufip-zodonamasu.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/1/0433/5481/6665/files/portfolio_templates_for_designers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0823/files/grade_2_english_worksheets_comprehension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/10200132931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/basic_applied_mathematics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/poniwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7266/8319/files/9592789046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/81046319824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/danedanadiwapizemepegare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8911/4789/files/72794181053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3747/4198/files/fuvejaxokirezukeku.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_off000069c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 5304 bytes
SHA-256: 28519108ee817a25e342751fcf2f9759a34a62a8681505db8b8dd103557a9830
font_01_sfnt_off00007bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB3 10900 bytes
SHA-256: f43e725d2b606de81344915b0bd510cce09ea4034a9e3b1af63e26d2f7c720d7

Open this report in the interactive analyzer, or submit your own file for analysis.