Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb6c5ee20f66838…

MALICIOUS

PDF

51.4 KB Created: 2020-08-18 16:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c3c8b7365387a19aea15eccb68a0e92 SHA-1: cf04d565ff9e8d397121cb63629dcb80b130e3ba SHA-256: bfb6c5ee20f66838bb4ac2c9f52b33b3c30a88a020951e3ee953b25686b47e3d
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm, with the primary malicious URL being ttraff.com. This suggests a phishing or redirection attack aimed at users searching for specific documents.

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.com/pify?keyword=behringer+x32+user+manual+espa%25C3%25B1ol In PDF document text
    • http://files.fourcornersencampment.org/uploads/1/3/1/6/131606431/lamaj.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/1/0427/9504/0924/files/44229334281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/9756682798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6265/files/volume_of_3d_shapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/jll_residential_report_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/96735436668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/adolfo_bioy_casares_la_invencin_de_morel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2391/6443/files/apparel_manufacturing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/katyn_kohout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/piwuwufewakurotuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4375/files/naxafuwewib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9908973296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/ielts_academic_exam_sample.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 3

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_off00007e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8A 5860 bytes
SHA-256: 751c78c95a0071e7f74511f6e06ddfd4fcd71981969deed1b863a3dad952c5b3
font_01_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 14288 bytes
SHA-256: 71c68a86789aed83602131c67ef7388cbf19b9ffe223e1a9f34d213746a10c36

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