Malicious PDF — malware analysis report

Static analysis result for SHA-256 09db17ba95bd73d9…

MALICIOUS

PDF

31.8 KB Created: 2020-08-22 13:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 038a5076942972c80153ec910f7cb2ba SHA-1: 599ebde3f640f387dc94a46c1760a8c02017e4ec SHA-256: 09db17ba95bd73d9ec5ab498f5898e334a1cb2d804c89c12e982da31bbab7fed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is a 'past tense worksheet', a common lure for phishing or scam sites. The presence of a large number of external links, including to a redirector, indicates an attempt to drive traffic to malicious infrastructure.

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/pify?keyword=past+tense+worksheet+ks2 In PDF document text
    • http://files.texasumbra.org/uploads/1/3/1/4/131453114/zevuw_kuzojusisikife_wewekovisu.pdfIn PDF document text
    • http://belen.createdragons.com/uploads/1/3/1/3/131383652/lavomilijivo_golufi.pdfIn PDF document text
    • http://files.vycareer.org/uploads/1/3/0/8/130874524/lixege.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/1/0427/7708/4070/files/juraponifofopajix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/1389717929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/85670180036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5364/4966/files/understanding_basic_statistics_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/85525673140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9962/0263/files/18842718064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/lujinozuv.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_off00004064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4064 5028 bytes
SHA-256: 94e170d188ea65e8f33c38c451398653698813bfb7b68cbf2f7b37167c741bd0
font_01_sfnt_off00005187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5187 9848 bytes
SHA-256: f1165a55d3be822ecf118bd05dbf3d519f548a1e4e8c9b4f4e21d031450219f9

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