Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e554cdcb3e57f5c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 00:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d23b0f4570923a4e4551827c9b2bf0fd SHA-1: ff561c2356eee3fd71ab56a37dd0021cdf97a876 SHA-256: 9e554cdcb3e57f5c481092d11a088d375f49c89377e8f4f56ae143c6d5872891
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary malicious URL identified is a redirector that likely leads to a malicious site. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking Shopify links, reinforcing the lure of a free download.

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=best+catalogue+design+pdf In PDF document text
    • http://files.northernillinoispainting.com/uploads/1/3/0/8/130814308/viwiwevamod_kawomudijuki.pdfIn PDF document text
    • http://nonex.rosinakhan.com/uploads/1/3/1/4/131438044/4351726.pdfIn PDF document text
    • http://zobas.tarahanish.com/uploads/1/3/0/7/130740206/0e63798e670.pdfIn PDF document text
    • http://files.chrisgriffithdesigns.com/uploads/1/3/2/6/132682820/tojenunigusugom.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/1/0433/1234/9334/files/26313893751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/lowercase_cursive_writing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1056/files/wuzinulisekagimig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/sigora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/38181991382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5650/3704/files/anemia_ferropenica_en_nios_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/linfoma_de_burkitt_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/suxupapitav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/devenir_famille_d_accueil_chien_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3933/2251/files/8158242724.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_off000071a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 5276 bytes
SHA-256: 82070bf0a408cc189552798dfe747543902ab83317ffaf79b18111f417256e72
font_01_sfnt_off000083aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 10288 bytes
SHA-256: 7f6bc00f8061632dfc89d6485ffe68998e052ebe9a4552a18cbcec2bf71dc80a

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