Malicious PDF — malware analysis report

Static analysis result for SHA-256 493b8a098be3fb2a…

MALICIOUS

PDF

41.0 KB Created: 2020-08-19 07:38:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20be3da152ede5fe36b93ee436603e87 SHA-1: 19415d3043698eef243581090bb75805e3289f4a SHA-256: 493b8a098be3fb2a220cc887bba0294fbc1adec3b01398a48386f53abdfdc2a3
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a data mining answer key, which redirects to a known malicious domain (ttraff.cc). The document also hosts a large number of links to other PDFs, likely for SEO manipulation or to spread malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a lure to external malicious resources.

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=data+mining+for+business+analytics+answer+key In PDF document text
    • http://gerogek.colmontessori.com/uploads/1/3/0/7/130739124/vobor.pdfIn PDF document text
    • http://jiviwimak.gsacsnj.com/uploads/1/3/1/4/131482995/gomorukesuvav.pdfIn PDF document text
    • http://files.hcl-informix-user.com/uploads/1/3/1/4/131411199/ede1a6b21276d.pdfIn PDF document text
    • http://files.finethings4u.co.uk/uploads/1/3/1/4/131483149/71fa521e2.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/1/0440/9910/9016/files/brainly_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/vivenoxusisijogijukeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/bejogivekaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/3029003975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/dizekazobumewuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/algebra_math_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/89039240454.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 5

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_off00006190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6190 5600 bytes
SHA-256: 15bd83bbc466ad0b4e46767268d3bdb6a3f034fb3526a02d375ee6e16f6dca1b
font_01_sfnt_off000074a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A8 10156 bytes
SHA-256: 9ef92611102637feb728e14517474b037d0af99f5c7e4401a75f1eddb5f5947d

Open this report in the interactive analyzer, or submit your own file for analysis.