Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d10c6ff8a70723…

MALICIOUS

PDF

45.9 KB Created: 2020-08-23 12:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c1c0a823e5a79d8b30b7e1b28102207 SHA-1: fb9b58aa95ec9a4963ab9bfcc5682a9cd5eeb587 SHA-256: 68d10c6ff8a7072306aa74495bfc24f7335b8291c09ca23bceb5414717d2646e
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as information about Medicare guidelines, which redirects to a known malicious URL. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=medicare+guidelines+for+bariatric+surgery+2017 In PDF document text
    • http://files.unionheightselementary-carthagetn.com/uploads/1/3/1/4/131409135/raxamowonuxem_munimo_buzofirel.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/1/0436/2698/7680/files/jitilenuvemonovemadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/milijaliduwimilevimil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2852/8799/files/51000465512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/91857570288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/fuzawesuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/jojoraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/tunefefemisivilalizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2907/5867/files/51423938814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/kanulobesugutefexav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/voponamive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/online_photo_converter_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/refrigeration_and_air_conditioning_vtu_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/700722517.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_off00007409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7409 5844 bytes
SHA-256: d2465ffec43d94dc0eb432a94758121d9e527b24f48d329155af6cfbf32520ff
font_01_sfnt_off00008811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8811 9996 bytes
SHA-256: 2f15ed5e0bf03f20905ac23e505bb5497f1e9f0976f46d8dac7b4896d5823098

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