Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55e8426209ec3cb…

MALICIOUS

PDF

96.5 KB Created: 2020-08-23 10:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b5151658c51acd52d69b782f5ad1891 SHA-1: b8324a28fb59920602ca0d22aa86c1c3698d0c19 SHA-256: d55e8426209ec3cbb2673931059a4caf4aeb290492c239d4cafd9e9d2f08807e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to redirect users to malicious infrastructure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=medical+terminology+suffixes+pdf In PDF document text
    • http://files.flyzephyr.com/uploads/1/3/0/7/130738614/wakosedafumej.pdfIn PDF document text
    • http://files.easternshorechess.org/uploads/1/3/2/7/132740260/zunoz_xexeni_lomefifedawede_rejuvina.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/1/0437/8840/2839/files/21862271666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9302/3133/files/pandora_bracelet_size_guide_in_inches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/maine_pyar_kiya_full_movie_khatrimaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/83986157077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/9051960355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/81473561295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/pobavosuvikeziwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/92775855801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/new_album_song_video_tamil.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 5

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_off00011d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5F 5652 bytes
SHA-256: 56d4129050f578cf30ee18ae65710446afc4fc22bfb683ba9f0872efbff22802
font_01_sfnt_off00013099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13099 27840 bytes
SHA-256: 31af8e8fb25a88bb3d7cc99ab41429f8b2e0b2b3bd24074ba2a0bf2a33c995e0

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