Malicious PDF — malware analysis report

Static analysis result for SHA-256 98dc74107a0dab35…

MALICIOUS

PDF

37.9 KB Created: 2020-08-21 21:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 596efa9f67b7673bff5b7da3265956f0 SHA-1: d0edeb5c5c7510c8383854100c90803a73b7a410 SHA-256: 98dc74107a0dab35bae94b07fb7f7244ab7f4c4ab3ee4b3eddedd4fe119d01db
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be part of an SEO link farm. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains text referencing 'Soclean cpap cleaner manual' and the malicious URL, suggesting a lure to a scam or phishing site. 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.cc/pify?keyword=soclean+cpap+cleaner+manual In PDF document text
    • http://xerodizen.cityislandlines.net/uploads/1/3/1/4/131482975/nanuzetiwevo.pdfIn PDF document text
    • http://files.spiritualrio.com/uploads/1/3/0/9/130969360/sidaveko.pdfIn PDF document text
    • http://giraz.emachinery.co.uk/uploads/1/3/2/3/132303382/vivogipejixaki_kuvosa_nonuzojige_sadajum.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/1/0429/9010/8833/files/88293955038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/zuleboworaxesepojot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/62186704857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/24673654925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/nudimomosaxowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/jquery_on_radio_change.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3599/5808/files/windstad_manor_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/fanukox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/zolonizaragukuwixanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/83672989884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/10171127290.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
🗂 Part of campaign: cityislandlines.net 6 samples

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_off0000557b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x557B 5004 bytes
SHA-256: c7473d4c642d7e8db571cd390c13eeb12dd53c45ff6b82dead79cdf05e597603
font_01_sfnt_off00006659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 10692 bytes
SHA-256: 8fc62cbcd2506fc9015dfc7ad76e729d8c5669e433e23b7a6bc95d97686b754b

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