Malicious PDF — malware analysis report

Static analysis result for SHA-256 2166e9b27721162b…

MALICIOUS

PDF

37.4 KB Created: 2020-09-18 13:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0c0e3cd1ed9bdcf7174b9849bad816c SHA-1: 6ac4e0424f52a201a92881f0f581c8f4ef849264 SHA-256: 2166e9b27721162b1426a139ba8ac8bd707478897e41f690c90dac3ce43ff4ae
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to a critical heuristic firing for a link to known malicious redirector infrastructure. Additionally, it contains a mass of external PDF links, many hosted on Shopify, which is indicative of a link farm. The primary malicious URL identified is https://ttraff.me/wix?keyword=st+alban+roe+athletics. No scripts were extracted from this sample.

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.me/wix?keyword=st+alban+roe+athletics In PDF document text
    • http://files.worldiqchallenge.com/uploads/1/3/2/6/132695470/2223ed2364a3.pdfIn PDF document text
    • http://files.bgirlysport.com/uploads/1/3/1/4/131437423/0d506d9.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/1/0433/0897/4235/files/sevobimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/cooperative_society_bye_laws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1461/7245/files/25419631457.pdfIn PDF document text
    • https://68221b14-34f9-4c1d-a01e-27c8e32c0eb2.filesusr.com/ugd/bc0b97_4b023ac9756043e99a4bbd296d6788d7.pdf?index=trueIn PDF document text
    • https://5dbb5caf-9fb3-4b24-b028-03d4b67265b8.filesusr.com/ugd/6240f8_eddd299417c54aa3818c25de7216ff09.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/vinexazixodisazaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4922/1281/files/notuduvil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/fidotok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/85876003506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/2995057762.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_off00005503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5503 5128 bytes
SHA-256: 6cd673e36eff517605e2aa63bb367547ebac4730bb8db18abb8b0c54e7b8bf55
font_01_sfnt_off00006664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 10132 bytes
SHA-256: af8dc299560c04270b28cbbf4b6b30ee911c4885e0baba478cc9637cb6d622c3

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