Malicious PDF — malware analysis report

Static analysis result for SHA-256 d615ef57fb5d40a3…

MALICIOUS

PDF

39.4 KB Created: 2020-08-15 05:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 311444b27f7062c96a6f83e4702d4081 SHA-1: a7449288ba8130f8e4217bd17670f3f0b23d12a2 SHA-256: d615ef57fb5d40a31ecc30c9af4cd82cf7d21912dd6f12d0b0382bd0292dac18
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains numerous embedded links, many of which point to Shopify-hosted PDFs, forming a link farm. One critical heuristic identified a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=birds+sound+music', indicating a lure to a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users through a network of links, likely to a phishing or malware distribution page.

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=birds+sound+music In PDF document text
    • http://files.clearviewresort.com/uploads/1/3/2/6/132681150/kafutolenopibevu.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/1/0437/9151/5809/files/zesanotajobajase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/12895071606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/57266500564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/13343416387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/36014779873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/wudun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/91172975651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/88176417818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/62755068892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/jujeputawogugokagike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/adjectives_and_nouns_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/autocad_searchable_text.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_off00005ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED8 4892 bytes
SHA-256: e7d99f7d734d6792b493aea7a98337ee60c38fd309a633c74e84255c3e7a1d81
font_01_sfnt_off00006f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F59 9980 bytes
SHA-256: a8908ceec01d2ee11908e1ec4cdefacf50ad67fb2590073ad680a649a2205b07

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