Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb319b2b39440bee…

MALICIOUS

PDF

49.4 KB Created: 2020-07-30 17:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54938f32fa26f6b8b281987cb6eb605e SHA-1: 45f9ed6e25e9c6351f9fc4812ff2df677935a860 SHA-256: cb319b2b39440beee0b18e64b4e5069d7ca269f2b643f89a2ba3408043070f78
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 a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.com). This suggests a phishing or redirection attack aimed at leading users to malicious content. The document body, though heavily obfuscated, appears to contain keywords related to educational worksheets, likely a lure.

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=algebra+addition+and+subtraction+worksheets+pdf In PDF document text
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdfIn PDF document text
    • http://files.birthassistanteducation.com/uploads/1/3/2/7/132710569/5862639.pdfIn PDF document text
    • http://files.lbcevansville.com/uploads/1/3/2/8/132815791/lulat-xakoxudeva-mubebisutesedar-wunaluz.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/1/0432/8783/8886/files/dunebejoxanexotupigobolar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/woxepatevupegede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/76800940994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/winibitof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/mesivugasumasazak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/mukodonuwafamojoxupujivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/54335188455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/nalipisare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0838/files/sofudezune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/vugimezonezufem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/gutewokam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/10172571358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/taxubofuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/watis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/gitomaj.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_off00008147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8147 5584 bytes
SHA-256: 6eca450e2c823a318a91ef07d7d005ccc099d9a3becd0d24ad4135817a87762e
font_01_sfnt_off00009448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9448 10308 bytes
SHA-256: 498284f4548f533804effe3a40fd473dc6037fc6b1376cc2b0774cdba1b11af0

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