Malicious PDF — malware analysis report

Static analysis result for SHA-256 5efebe6635a6c43e…

MALICIOUS

PDF

51.9 KB Created: 2020-07-25 09:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c26dfe979650928e1ff763f17596332 SHA-1: 00077ccb33bb7a87bcb1e7399f6254bab3cc31ee SHA-256: 5efebe6635a6c43e94b5ced703d646dd889fe5b9386b39a88e1aa957acf258c8
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a malicious URL, indicating a phishing or scam attempt. The ML classifier strongly suggests maliciousness. The document body, though heavily obfuscated, appears to be a lure for a data sheet, which is then replaced by a redirector.

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=armorseal+650+data+sheet In PDF document text
    • http://files.stpeterslimpsfield.org/uploads/1/3/1/4/131454106/katuxeva-petukoresabek-wujudipuxu-jemajusiw.pdfIn PDF document text
    • http://files.authortomanthony.com/uploads/1/3/1/4/131411199/2111746.pdfIn PDF document text
    • http://files.benefit.live/uploads/1/3/2/6/132695455/285406.pdfIn PDF document text
    • http://files.spacecoastchristianacademy.com/uploads/1/3/1/0/131070485/253717e1dc0a.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/1/0438/6367/0944/files/gogufeneliwemiweko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3318/8759/files/wurasavodofoduxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/94793085326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/xerenolujoregeriko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/48641723073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/vixopukotugemubojis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/62246159925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/76542057407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/xaniwirinev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.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 7

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_off000080c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C9 5108 bytes
SHA-256: 5433816b3f3239bd028831d862b6f88f59b9e72cff6506f541fcc52977884bb5
font_01_sfnt_off00009225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9225 14552 bytes
SHA-256: e5699602c1a84d557fa1ad0f0397f7921c597c0752e0a5278ee9ee3d75172a9a

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