Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d8f81b86805573…

MALICIOUS

PDF

69.8 KB Created: 2020-08-07 07:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7821a043470826236dc8f22d4b1b1b8 SHA-1: 652aafa35c2db893d1b610f911ed98a515b9f257 SHA-256: b2d8f81b868055736435840f2139fe2e9b33af8b1715ceced393afc0819cf63f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, ttraff.cc, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'oxidative stress related diseases pdf' and the URL itself, suggesting a lure to download a document. The presence of a malicious redirector indicates a phishing or malware distribution attempt.

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=oxidative+stress+related+diseases+pdf In PDF document text
    • http://files.treenailsoakproducts.com/uploads/1/3/0/7/130776276/3748083.pdfIn PDF document text
    • http://files.dominiquecheylise.com/uploads/1/3/0/8/130873807/dujugaruga-solugemin.pdfIn PDF document text
    • http://files.carpediem-photo.com/uploads/1/3/0/7/130739648/9c86b183723.pdfIn PDF document text
    • http://files.thepotwarehouse.com/uploads/1/3/1/3/131383743/xajurajumud.pdfIn PDF document text
    • http://files.sweetashoneyvinylcreations.com/uploads/1/3/1/6/131606343/4750951.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/1/0432/0329/7437/files/3592642929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/96229450143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/17117382968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/46819648045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/8574191249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5957/6986/files/katexivogolefemafugubil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/12283831816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/22942967255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/1673/7183/files/34170655812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/principles_of_managerial_finance_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/vitatugiduro.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_off0000d4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FC 5188 bytes
SHA-256: 1c4598eac9644bb4531e44749dce4eddc0c1fe004f0568259b257d17768d941b
font_01_sfnt_off0000e6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B7 10276 bytes
SHA-256: bf03464b48c9e636768373adbb9222db61f0b2cc4d1d7bda5ce814aae0e08ba7

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