Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66284f47f94240a…

MALICIOUS

PDF

32.5 KB Created: 2020-08-07 18:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f1745607a0086841f4c663ccca9373e SHA-1: 5573054d5517c0df53a802e8955b64372822cf70 SHA-256: b66284f47f94240acf6f38adff7036ae2ddc471ba3ce7829ba31e7e0dafb1f37
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used to create link farms for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=flow+cytometry+protocols+hawley+pdf', is flagged as a malicious redirector. The document body contains garbled text but includes the same URL, suggesting it's the intended lure. The presence of numerous Shopify links, while some are benign, indicates a pattern of using legitimate platforms to host or distribute malicious content.

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=flow+cytometry+protocols+hawley+pdf In PDF document text
    • http://files.movingstarzpub.com/uploads/1/3/0/8/130814535/fukolol_xositovalereso.pdfIn PDF document text
    • http://files.jjartmedia.com/uploads/1/3/0/7/130776462/5895636.pdfIn PDF document text
    • http://files.pack3049.com/uploads/1/3/0/8/130874086/8dfffaba36ba2.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/1/0428/9665/4499/files/xunox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/fikato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/rupokilotijiritalim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31052941417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/85836482777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/reduce_mac_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/ledenulunidotimovezomawef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/biblical_names_and_meanings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/rapuziveliwepan.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_off00004317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4317 5544 bytes
SHA-256: 21ec4fe4aa8250f783d9830af7ef0aea74e7e93aa4546f0f91aa7ca7998faa3b
font_01_sfnt_off000055e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E1 9248 bytes
SHA-256: d599b3668e26a9784c317f161b1ab63c86287e9b1e7c8a06f94c8d9c78790d95

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