Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb728593ba241e38…

MALICIOUS

PDF

45.7 KB Created: 2020-08-18 15:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 311e564f274a47ba036d4148e0578a7c SHA-1: baa73ac6f34a1ae8e355caf49f616051dd128742 SHA-256: fb728593ba241e381d145b8ad378b4fc823517b7cfa46dc00fde2c3182773614
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body suggests a lure related to 'poetic devices worksheet grade 6', intended to trick the user into clicking the malicious link. The PDF also hosts a large number of external links, many pointing to Shopify domains, likely as part of a link farm to improve search engine ranking 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=poetic+devices+worksheet+grade+6 In PDF document text
    • http://files.graceoutloud.com/uploads/1/3/1/4/131438353/losewiveravujali.pdfIn PDF document text
    • http://noxizom.tcrinnovations.com/uploads/1/3/1/0/131070152/6085918.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/1/0431/8697/8984/files/21846370518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/wobasukozivuzomitot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2517/files/articles_contracts_exercices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/83270364421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/ginikifixaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/lesikivedafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/aging_as_a_social_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/37670228317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/pebaxojoroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/54332026996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/sivuvino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/gewizafoxuja.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 1

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_off000074df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 5540 bytes
SHA-256: cd40a0416b0bbdadb49b75bc6bf817d27a62a18963d384ed09408c6eb1156caf
font_01_sfnt_off000087c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C0 9888 bytes
SHA-256: 8e0f02673ceb35a7d0e83f29b0542df5f7155bbb36ffc6bb32a5906838b98b42

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