Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5f820f3ddaddae…

MALICIOUS

PDF

32.6 KB Created: 2020-08-01 18:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e706a19029e26ca136e67b6e8f029043 SHA-1: 67d66cbd3dacf7bdebe430467264f7898a9ebc12 SHA-256: 2b5f820f3ddaddaea42a762b00842574425b04a1e0ecc34a1d22bfada15ca217
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, which is characteristic of SEO spam campaigns. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=homelite+sx-+135+manual+pdf'. The document body, though heavily obfuscated, contains text related to a 'Homelite sx-135 manual pdf', suggesting a lure to disguise the malicious links. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=homelite+sx-+135+manual+pdf In PDF document text
    • http://files.diannesk9connection.com/uploads/1/3/2/6/132682471/sesox.pdfIn PDF document text
    • http://files.cedarhillouray.org/uploads/1/3/2/8/132814071/4589043.pdfIn PDF document text
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.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/1/0434/9270/4408/files/28537389830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/38353930382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0035/6251/files/nibur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/87005257291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/kipawabel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/91551085911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/18695319351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/29097402798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/23706946139.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_off00004238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4238 5492 bytes
SHA-256: 0a3ae1be164ca923772a80729fd811abf53a295b57645bd0692f0b20e844694a
font_01_sfnt_off000054e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E9 9672 bytes
SHA-256: 9360eced29c23a8f4eb2f8ba62f0b8e9c37a9ef2f9fc2ff41c2ce91cc52d6231

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