Malicious PDF — malware analysis report

Static analysis result for SHA-256 b541eeebd377e470…

MALICIOUS

PDF

40.9 KB Created: 2020-08-04 10:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a410ae137fd84c29aa939014616f4a7 SHA-1: 794ad2834fd42e419bc9744460102b1162f49cb9 SHA-256: b541eeebd377e47034ec992ab5e32d6a87b0435f065140bc5cc52463301266f3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.com, which is used to redirect users. The document body, though heavily obfuscated, contains text related to 'writing tips for ielts pdf', likely a lure to entice users to click the malicious link. The file also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic.

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=writing+tips+for+ielts+pdf In PDF document text
    • http://files.kreationsbykayonline.com/uploads/1/3/2/6/132681464/2041792.pdfIn PDF document text
    • http://files.rleveille.com/uploads/1/3/1/8/131871864/gires.pdfIn PDF document text
    • http://files.fpcmorganton.org/uploads/1/3/0/9/130968996/2f1fb34a1.pdfIn PDF document text
    • http://files.kinrossmensshed.org/uploads/1/3/1/6/131636995/2469206.pdfIn PDF document text
    • http://files.brandieckertphotography.com/uploads/1/3/1/4/131408017/8165813.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/1/0437/8741/9805/files/wow_classic_swiftness_potion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/givagad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/wevuzawagezegonejujud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/napidumividore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/14758658947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/jodumopumovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3873/files/19513734781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/john_deere_410_backhoe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29480145432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5842/9089/files/dd_1172-_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/bebodiborasusifefitised.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/3256389164.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6265 5012 bytes
SHA-256: c77efa0586209e1230260b33f3abd33689f24d13eae557b3b3a847805f180d7c
font_01_sfnt_off00007398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7398 10264 bytes
SHA-256: 2d150b4813acf950f6256c6ca834ef187e56a4498947b6de60d793613f801865