Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8f15a0845be04c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 22:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1378885feefbfcc8d1b0c1647cd6321 SHA-1: 76c10d383965b26d2d44cc9d0d6bbf6f8fd4897a SHA-256: ed8f15a0845be04cf574e1c3aeade34035638fe7cf46974c1683b69e31e6cdcc
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.cc/pify?keyword=example+of+mean+median+mode+in+statistics+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to statistics and the PDF filename, suggesting a lure to disguise the malicious intent. 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.cc/pify?keyword=example+of+mean+median+mode+in+statistics+pdf In PDF document text
    • http://files.sunshinejeremiahwolfe.com/uploads/1/3/1/4/131438313/5935579.pdfIn PDF document text
    • http://files.isautah.com/uploads/1/3/1/3/131379406/fe915.pdfIn PDF document text
    • http://files.carolinevandeneynden.com/uploads/1/3/2/6/132681443/b1449a3c8.pdfIn PDF document text
    • http://files.sunninghill.com.au/uploads/1/3/1/1/131164573/53d41.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/1/0435/2009/8472/files/41009540562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/makazis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/26544203868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/go_launcher_3d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/rudapigaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/melavatani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/c_binary_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/elementary_grammar_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/zitibikonuguxozaz.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_off00006ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD1 5228 bytes
SHA-256: ea2f9b5381aa1625e65e1f6be801356d11bd406fc89aa3b938bc799d338893b3
font_01_sfnt_off00007c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9A 11120 bytes
SHA-256: cdf3c4aefc37c3aa29c16ed24a66e14135ae94849b309f0671067fee9b5197fd

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