Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfc5ac24e3d6d8f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 02:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d15e2294276e55ea429ef08247e29004 SHA-1: c91d9fd8b4ac4e27bef7aac9f47191f432e66d81 SHA-256: 7dfc5ac24e3d6d8f32eaa1a642f2654f8068971486ab1206b162195ef96db93f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector URL. The document body text, though garbled, includes the phrase 'Commencement of business certificate' and the malicious redirector URL, suggesting a lure. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm strategy, likely to obscure the malicious 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=commencement+of+business+certificate In PDF document text
    • http://files.ronnaanderartist.com/uploads/1/3/1/3/131398461/b51eee962.pdfIn PDF document text
    • http://files.earringsandwhatever.com/uploads/1/3/1/6/131606027/nujeravigan-xesimuretaweba-bomazofope.pdfIn PDF document text
    • http://jotidesi.arthouseunited.com/uploads/1/3/1/4/131482976/6741964.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/1/0435/0319/0181/files/ziguxajanarupepalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0928/6042/files/docs_to_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/gowoseni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/51784577136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/zogaremoxipusen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/hidrocarburos_aromaticos_ejemplos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/37961759967.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 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_off00005e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E30 5040 bytes
SHA-256: 9380f780981e987a9240fd3d77bb9beb89f504ab088780b1c6dbd3a865f66a91
font_01_sfnt_off00006f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F36 15220 bytes
SHA-256: a8851f0ba58b7010824a51d4ef3e4a8461c231096953eef376ac5afcc4b443a4

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