Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d47cc9a5fdd8f75…

MALICIOUS

PDF

53.1 KB Created: 2020-08-15 12:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03d785a8a08568a3d295549ede0f101c SHA-1: cba3cae70ab79d955f7a4d1b6d0d48367feab7ed SHA-256: 7d47cc9a5fdd8f75eacdebe0de115b0a613a9c068b8fda0b58b5ed76c5a2b70c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body and heuristics suggest a link farm or SEO scam designed to trick users into downloading further content, likely malicious. The primary redirector URL is a key indicator of this malicious activity.

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/wb?keyword=hypnosis%20techniques%20in%20urdu%20pdf In PDF document text
    • http://vipik.nirvanaeventlighting.com/uploads/1/3/1/8/131856158/017bf00.pdfIn PDF document text
    • http://files.nayadaya.com/uploads/1/3/0/7/130739718/2f25a07b8b.pdfIn PDF document text
    • http://files.chrisspaight.com/uploads/1/3/2/3/132303238/padeva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/satijixomifak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/oxford_english_to_french_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/46382348323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2783/2733/files/19236432099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/pukalola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1770/7413/files/building_construction_rangwala_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7404/3556/files/javascript_remove_commas_from_string.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBC 5072 bytes
SHA-256: 5079c64a5b143c662d6498495f25a5955a6e62744da2cd0ea1083e001913d3f0
font_01_sfnt_off000080f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 10380 bytes
SHA-256: 2f3183187f56a8b45084a81cec95c6e7c4223421db74c9759fe2b991ac31d218
font_02_sfnt_off0000a4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AB 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90
font_03_sfnt_off0000b942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB942 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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