Malicious PDF — malware analysis report

Static analysis result for SHA-256 549fd057dbdf9721…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 03:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c199fe893cf42a288362e0942e86d15f SHA-1: 559cd7c0637deceb1f05f87479616ef751a12690 SHA-256: 549fd057dbdf972179cae10a61e9942e3f51b409f44d54073a23c8eb2840ed1d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link is designed to lure users by promising a PDF to Word conversion tool. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to various external resources, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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=convert+pdf+to+word+on+ipad+pro In PDF document text
    • http://files.bennysbnb.com/uploads/1/3/1/3/131382696/robosimumexonuxelo.pdfIn PDF document text
    • http://files.drkatieskitchen.com/uploads/1/3/0/8/130874539/juvosusenatame.pdfIn PDF document text
    • http://zawawu.killesterspecialolympics.com/uploads/1/3/0/7/130775432/25db7e0b02af0af.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/1/0427/8353/9366/files/47314644447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/kapalaxuwekoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8945/1416/files/aircraft_engine_ignition_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/vaxesebulisajozagev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/5884413919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/kanorozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/fidutuwaxididapaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/sevalagegizobogagewifuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/48541865124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/alphabet_tracing_worksheets_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/16274957542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/83842781771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4115/2406/files/ferekazurigimog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/banolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/35331233635.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_off00006b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 4884 bytes
SHA-256: f951580fe91c0ac99d730809aad0cde68ca4454dff32e8c12a1b5244b361eeb3
font_01_sfnt_off00007c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C25 12452 bytes
SHA-256: d5420f202370ffee2f0094f0155aaa291d17d70943524ff6ed9555554f7e903e

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