Malicious PDF — malware analysis report

Static analysis result for SHA-256 90bf39139114d2a4…

MALICIOUS

PDF

47.0 KB Created: 2020-08-09 20:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b94aec123334ed16e0113094ca29e7c SHA-1: 408e3b16fabcbd46e5ef75571cf60cee758a49b3 SHA-256: 90bf39139114d2a4864a8a37cd8f900cacb8c519738cfb20007ecb62e0b926e9
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=power+amp+design+pdf', which is likely intended to lead the user to malicious content. The PDF also contains a mass external PDF link farm, with the first URL pointing to a Shopify domain, suggesting an attempt to obscure the true destination.

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=power+amp+design+pdf In PDF document text
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.pdfIn PDF document text
    • http://files.vanvliet-kassenbouw.nl/uploads/1/3/1/4/131483097/mosozojejo_zazeletexo.pdfIn PDF document text
    • http://files.ractproductions.com/uploads/1/3/1/3/131398246/jaruzesip-xufitosopujo-fumuzozeximut-lutikisivuwusa.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/1/0452/3904/2205/files/33685447378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/artificial_intelligence_seminar_report_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/49195535505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/31930986102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/request_letter_for_job.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/soxajimuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2737/2955/files/2256175470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/10586674440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/wilovogubufusipaxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8274/files/tilidomoritasoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/jupetunik.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_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 5420 bytes
SHA-256: 883684f1db24c8e494d5395da9bb9f2cbd6b22ee3bf7b710105b33541ab4d537
font_01_sfnt_off00008bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBB 10380 bytes
SHA-256: b9f46959fcfbafb14f24fb1f928933f8a6e02e14bd210d4cbe5a8c66d7c10337

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