Malicious PDF — malware analysis report

Static analysis result for SHA-256 74222d0b67fbb63b…

MALICIOUS

PDF

51.6 KB Created: 2020-08-05 06:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86b2e4bae661062f24c3b15964609a24 SHA-1: 86fffe0614b4133ad38362872c815652c55d884b SHA-256: 74222d0b67fbb63bc6cb89914dab9abb5caf2bbcfb16c1a717221986f8f9a142
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a primary redirector identified as 'https://ttraff.com/pify?keyword=ischemic+stroke+journal+pdf'. This redirector is flagged as malicious and part of an SEO link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to academic journals, reinforcing the lure. No scripts were extracted, but the presence of malicious redirectors and link farms strongly indicates a malicious intent to redirect users to harmful 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.com/pify?keyword=ischemic+stroke+journal+pdf In PDF document text
    • http://files.honeybugscornwall.co.uk/uploads/1/3/1/6/131606330/7161029.pdfIn PDF document text
    • http://files.ojibwe-dakota-in-mn.com/uploads/1/3/1/1/131163687/04f258.pdfIn PDF document text
    • http://files.kresinternationaladmissions.com/uploads/1/3/1/4/131437454/ddaa923282b03a.pdfIn PDF document text
    • http://files.antengineering.com.au/uploads/1/3/0/8/130874396/lepazalevajitanol.pdfIn PDF document text
    • http://files.sunninghill.com.au/uploads/1/3/1/1/131164573/53d41.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/1/0439/1400/2587/files/4666998607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65039204935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3225/6407/files/witcher_2_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/vunebuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4197/0583/files/66923547805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/10256882450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/28338956858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/61148684280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/89933067265.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_off00008ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD2 5472 bytes
SHA-256: 32681fe343ca4c7a5656d905cc9f919d3f1dde95cc44587aa07500140e3e1e5f
font_01_sfnt_off00009d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D46 10808 bytes
SHA-256: 2ab08a31bfb6c43ef9a203cb12623cc974a2eac33d65ceb50fe5c6e8f3051fb9

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