Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d33d9b6a94c4d5f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-25 05:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca08be93d62b2ab7b5db5197174b0e5b SHA-1: 8b74fee2e15d8af0cb8cf157891963a481a5d83d SHA-256: 7d33d9b6a94c4d5fc0ae55d6cca85f53b5aad0b9ce72ec68f9d4e813acbfc777
194 Risk Score

Malware Insights

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

The PDF contains a lure for "Sylvania bulbs replacement guide" which links to a redirector URL, indicating a phishing or scam attempt. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=sylvania+bulbs+replacement+guide In PDF document text
    • http://files.justisville.com/uploads/1/3/1/4/131409709/mosoz_samofuzutagud_boxuguw.pdfIn PDF document text
    • http://files.mrsyoshida.com/uploads/1/3/0/8/130813320/f39570728c5c8f.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/1/0438/5990/2624/files/xofetikotamabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4302/9143/files/pexepironuwev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6839/files/aiesec_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/consumer_reports_best_convertible_car_seats_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/16925510342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/a_wife_s_cry_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/forming_questions_in_spanish_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/9519362305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/pudedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9614/9921/files/descargar_cambridge_grammar_for_pet_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/19614987607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/pigufojubipov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/15026744185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D10 5572 bytes
SHA-256: 93a0f4da51deb12cf7ab3e6b29f4f8440a6eae22970d772c58aa19b9ebf67e11
font_01_sfnt_off00006fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDF 10556 bytes
SHA-256: 7b670e477d86a99edf5ad847a5ee22c9a06dddd38b62aae869c358c8284b8adf
font_02_sfnt_off00009404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9404 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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