Malicious PDF — malware analysis report

Static analysis result for SHA-256 5169a6a722b137c7…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 22:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 268b424f0b2bb29136a372dfbcbdfe2d SHA-1: 77de26d4290ed1c5ccf1a40f3a27d196b81b48a2 SHA-256: 5169a6a722b137c7418c33e80234f2c83ac80b3d0a3a6522368f23a930fd6e5f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'detailed lesson plan in english pdf' and the malicious URL 'https://ttraff.com/pify?keyword=detailed+lesson+plan+in+english+pdf'. This suggests a lure to a malicious site disguised as educational content. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO 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.com/pify?keyword=detailed+lesson+plan+in+english+pdf In PDF document text
    • http://files.mymslifestyle.com/uploads/1/3/2/3/132303270/panapepubomosi-ziwagedunetivuk-wisijudomimuv.pdfIn PDF document text
    • http://files.caiwilliams.com/uploads/1/3/1/6/131606027/dilukixizo-pawako-duviturerelu-robejokor.pdfIn PDF document text
    • http://files.westonathletics.net/uploads/1/3/2/7/132740711/suterixewapedor.pdfIn PDF document text
    • http://files.jvonhdesigns.com/uploads/1/3/1/0/131070424/molupogamasusax.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/80278007767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/nuwesivivuxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/66133391861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/masuzumofakow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/jofumasijiwadalogumunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/zebosuzevasizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/book_and_quill_minecraft_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/fagup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/mirewisigotajejon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/92363766975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/59913761881.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 8

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_off00005f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 5208 bytes
SHA-256: 135b4933fc95e52bac90db0adf16069d8220b4e66f1a52b0b83948f360b11f6f
font_01_sfnt_off00007122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 10316 bytes
SHA-256: cecb43d87d3f6aaf8d6a65fbce560bc87a449a2ad4264f5262ffee2221e85d18

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