Malicious PDF — malware analysis report

Static analysis result for SHA-256 f426fa71e6b6cba0…

MALICIOUS

PDF

46.1 KB Created: 2020-08-08 23:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62a1e0342b17542d36495117ee1eda91 SHA-1: ef61b47bc74fd761667c2827b95983b004fd9cd7 SHA-256: f426fa71e6b6cba00729d4054a85298759de4f63208e93b447ae2ce04821225e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous external links, with a critical heuristic firing indicating it's a malicious redirector link farm. The document body, though heavily obfuscated, contains text suggesting it's meant to appear as 'explosion box instructions'. The primary malicious URL identified is ttraff.cc, which likely serves as a redirector to further malicious content. The presence of many Shopify-hosted PDF links suggests an attempt to leverage legitimate platforms for hosting malicious content or for SEO manipulation.

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.cc/pify?keyword=explosion+box+instructions+pdf In PDF document text
    • http://files.angmeringflowershow.co.uk/uploads/1/3/0/7/130775197/6552449.pdfIn PDF document text
    • http://zutebepij.tasteoforovalley.org/uploads/1/3/1/6/131607163/c847526.pdfIn PDF document text
    • http://zujefimu.robertssurf.com/uploads/1/3/1/0/131071157/3cf947d4c104d9f.pdfIn PDF document text
    • http://files.cmcgeewrite.com/uploads/1/3/1/4/131438437/050a3.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/1/0439/1242/9723/files/xuxoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/25916312735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2560/4513/files/nilosivilobokov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/40598276187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/dusuxezuragiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/crazy_cee_lo_green_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/antologia_de_leyendas_cortas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/aaron_smith_dancin_krono_remix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/viwebakiziwepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/second_life_grid_status.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9702/1861/files/61180866680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/homogeneous_differential_equation_practice_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5542/2369/files/69779084537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/vonepozutubapotefigulujuw.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_off00007461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7461 5104 bytes
SHA-256: 29c21cf0d1c1a399cc0209685d8df70aed47e958ba686db45ff56304a97dcd90
font_01_sfnt_off000085ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CA 10656 bytes
SHA-256: 000d2b42caaac1538b999a4b5cc7ee17f9329587b50392f239d52f7adb1b078e