Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9d898fc6905478…

MALICIOUS

PDF

42.2 KB Created: 2020-08-07 00:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b53abd150e9ce50db50dcc96814b557e SHA-1: 0b7028fafadb63105c5f97bbea8db799e6a055c2 SHA-256: 9e9d898fc6905478df58759266d3ef502a723875764541e1a1c7488c54501bc3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One of these links, 'https://ttraff.ru/wb?keyword=prefixes%20and%20suffixes%20quiz%20worksheet', is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for further exploitation or phishing.

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/wb?keyword=prefixes%20and%20suffixes%20quiz%20worksheet In PDF document text
    • http://files.empoweringradiance.com/uploads/1/3/0/7/130775515/5290744.pdfIn PDF document text
    • http://ludavo.capitolroofingservices.com/uploads/1/3/1/4/131438216/3622294.pdfIn PDF document text
    • http://files.tiloscleanwater.com/uploads/1/3/1/4/131437172/6997362.pdfIn PDF document text
    • http://files.marthastjean.com/uploads/1/3/1/8/131856476/9259830.pdfIn PDF document text
    • http://files.positive-matters.org/uploads/1/3/1/3/131383949/e58b7fd9b589.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/41545205569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/99820838680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/komonifibubulajavajina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/durga_saptashati_lyrics_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/foxojukizabovejewini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/gurepovusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/8322534106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/duzapitesexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/33603544316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/rexaxumizawivajomubi.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5969 5248 bytes
SHA-256: e463b9bf468cbf505daad45beb4b09e56e0752015b64d16a7cb3c34664596d87
font_01_sfnt_off00006b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B47 10192 bytes
SHA-256: e7f7059e2e7b9b33da3f241e75dd2f38e7cc6f0f7188bf03feb77f23c15bdd88
font_02_sfnt_off00008deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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