Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf6b680e611ded7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-20 06:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5bf7499f13a85f1bcef9fdf6d5788e1 SHA-1: 4c03a183dbb1f98407d68771c4dc781c05cbbe07 SHA-256: 4bf6b680e611ded71ab03c6668059ce8630a03e3b2bfc906ea3468088cb99461
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document also functions as a link farm, directing users to numerous other PDFs hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. 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.com/pify?keyword=aldol+condensation+product+between+formaldehyde+and+acetaldehyde In PDF document text
    • http://files.filmbandits.org/uploads/1/3/0/7/130738903/6f3e10.pdfIn PDF document text
    • http://files.plbra.org/uploads/1/3/0/8/130873893/131952.pdfIn PDF document text
    • http://files.rubycopper.vn/uploads/1/3/1/6/131606155/6564262.pdfIn PDF document text
    • http://sogose.williamogmundson.com/uploads/1/3/1/1/131164456/tiwolew.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/1/0432/4474/8950/files/49992715561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/isomerism_class_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/vigew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/kakodojikowota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/12_weeks_pregnant_scan_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/33504122857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/11863492429.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_off00005cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 5716 bytes
SHA-256: 5ba116741771fe286bc21174e881849962f0a17900c0d183886fc6df50a2422a
font_01_sfnt_off00007033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7033 15220 bytes
SHA-256: 548982a5ab3d499624b5205c22c73da7d918a4ad979e03624954a94603839afb

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