Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a33a8259e00597…

MALICIOUS

PDF

44.6 KB Created: 2020-07-31 11:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1ade5748f763e6aaef01aadcb3dbc5f SHA-1: c060b34f4546d9bcf0cddefd6f8be753c80ab858 SHA-256: a9a33a8259e00597286899036ab806770e0cc4bbaf3b122aa55888e7d7e48b86
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, suggests a lure related to educational worksheets. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

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=graphing+and+data+analysis+worksheet+pdf In PDF document text
    • http://files.vivalavisa.net/uploads/1/3/2/6/132695416/312b8be1a88c.pdfIn PDF document text
    • http://files.mariealohalanibrown.com/uploads/1/3/1/4/131411539/sidomeme-fazenopap-nizafelu-tutufojevi.pdfIn PDF document text
    • http://files.misoagogo.com/uploads/1/3/2/3/132302872/1342527.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/1/0428/9835/8432/files/51191810805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/zesikewokolobofapenuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/ronuvonewalami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6318/9412/files/78607003178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/sakufupavimemapaxoware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/veruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/rekufitoxesunixewoxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/xewin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/telowowewimuwodibilukuw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7002 5380 bytes
SHA-256: e94006cde0eeab0883a4034edbe42ac05e3fefa41c928aa0c64c09cd8f81626b
font_01_sfnt_off00008260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8260 10204 bytes
SHA-256: d4131d513a2d77f9f4ad5fd10cdeab978e2c2854520f00d0b6f7339975fd4876

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