Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd1f068832ea46f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-18 22:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd9a11329b0554289347dbcc297d304a SHA-1: 878dfb68ea7c0d264a9ff9801a314c44992e793a SHA-256: 9cd1f068832ea46f8f79ba1b9fdc4db8b211a87772385cc742f9e08efe00eca4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=grade+2+english+worksheets+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to disguise malicious activity as educational content. The ML classifier strongly indicated maliciousness, supporting the presence of a redirector designed to lead users to further malicious 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.com/pify?keyword=grade+2+english+worksheets+pdf In PDF document text
    • http://files.petshop.studio/uploads/1/3/1/8/131857540/relirozomi.pdfIn PDF document text
    • http://files.uselessbayknits.com/uploads/1/3/1/6/131606789/9160353.pdfIn PDF document text
    • http://files.genuinelyjoyful.com/uploads/1/3/1/8/131856232/1d2e147.pdfIn PDF document text
    • http://terira.phillipsexton.com/uploads/1/3/1/3/131380344/a2537cd8e4c3b.pdfIn PDF document text
    • http://files.southaustraliancavyclub.com/uploads/1/3/1/6/131606159/3f35671d9.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/1/0430/8851/1125/files/60588112339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/3622567216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/gipijojugalekol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/sajuzoridokujopibopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/7578603005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/55229594018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/19107247867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2888/8217/files/78012713042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/xubifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5129/3599/files/31541470245.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 2

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_off00005dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBD 5624 bytes
SHA-256: 2ca6465f04a64384b65a36a4d9e2da6a16f37c22171a998467fe249de307785e
font_01_sfnt_off000070f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F7 10056 bytes
SHA-256: 19734ef8c0a4718d0f7c84034ee6cac7f47d6e7635acd78088349304ae9d74b0

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