Malicious PDF — malware analysis report

Static analysis result for SHA-256 4244ffaa6a4e38bc…

MALICIOUS

PDF

67.1 KB Created: 2020-07-29 14:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a1d0837f7fcf491a2322729fb9a3449 SHA-1: 1bba5d6f5ae3e377b76ad00345f507aa17a42ffe SHA-256: 4244ffaa6a4e38bc23fe30c585d50e08840278f6d20fc7ac908ebf601fcb072f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identified a link farm, with the primary link pointing to a Shopify domain. The document body, though heavily obfuscated, contains text related to a 'beekeeping project pdf', likely a lure to disguise the malicious intent of redirecting users to harmful sites.

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=beekeeping+project+pdf In PDF document text
    • http://files.watanaberesearchlab.com/uploads/1/3/1/3/131397927/962672.pdfIn PDF document text
    • http://files.kinnakeetclay.com/uploads/1/3/0/7/130775108/68193.pdfIn PDF document text
    • http://files.odnws.com/uploads/1/3/0/8/130813399/jujudosukavagot.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/1/0429/0147/1388/files/vepexepexesofezasenag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1562/7175/files/kudivuzonutova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/zelibikodazakatuzowabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/wazegetap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/18551217008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/77878396986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/doluxijixali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4304/2966/files/95780616534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/dijowororarutebij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/poxuwipeduzazinegop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/39912481891.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_off0000cb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1A 4880 bytes
SHA-256: 881dcf827d53b28ae328461a01b827a0872f8c5089eb80b0d6ab0f1d4d2d4872
font_01_sfnt_off0000dbc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC5 10392 bytes
SHA-256: b9f1066e1126a30c645a274eabed4757aeaec9e5efa0fdb695c521619d5c6478

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