Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac6caeb2c84adc3…

MALICIOUS

PDF

61.5 KB Created: 2020-08-03 18:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39cd40f0447adc009dea4df5f12fc8e6 SHA-1: 2d5b4723b062ddfad1e42d6cc0ab695f8f564972 SHA-256: 5ac6caeb2c84adc3aef646ae94ad899ae0341b11fe4863c8b68523d5b390f0d1
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service, which in turn points to various PDF files hosted on Shopify and other domains. This behavior is indicative of a link farm or phishing campaign designed to distribute malicious content. The primary lure appears to be "tracheostomy nursing care pdf", suggesting a pretext for users to click the links. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=tracheostomy+nursing+care+pdf In PDF document text
    • http://files.kristankoutureboutique.com/uploads/1/3/1/3/131383456/lojozap.pdfIn PDF document text
    • http://files.majestyjewellers.com/uploads/1/3/0/7/130776749/makugepexax.pdfIn PDF document text
    • http://files.dkgnystate.org/uploads/1/3/1/3/131383377/6691421.pdfIn PDF document text
    • http://files.furdinez.com/uploads/1/3/0/7/130739076/fb15d741a4f39f.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/1/0438/6275/3445/files/18776576652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/simcity_3000_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/26255312160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/tagawixatilanegabug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/nawudujozexurunubeboje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/regrowth_10_10_10_seeds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/91956313958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/30360257015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/gevesogepepodumaduzuforo.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_off0000b36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB36C 5588 bytes
SHA-256: 95757c72363e9ea5290b21a2fd852875d2bf2fa4e7ae315abd100088cf81e331
font_01_sfnt_off0000c64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64B 10272 bytes
SHA-256: e6fe4f4823c11ac20930e8315384a21647df6acf81cb92ac597642908480b4c7

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