Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd506a56c80815c5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-20 13:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09f367688eb96e659f32494bd2f0e043 SHA-1: 237f533f716907b5c9edea58ae647a58c1961239 SHA-256: dd506a56c80815c5deba1939476f4407ca3a653f1bef8dd82a9c7d4e67f31e66
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'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely intended to redirect the user to a phishing or malware distribution site.

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=limits+of+trig+functions+cheat+sheet In PDF document text
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdfIn PDF document text
    • http://files.gourmetgoodies.us/uploads/1/3/2/7/132712306/nipisofokebe.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/1/0430/6717/9162/files/19177532886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/general_training_ielts_reading_samples_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8669/9925/files/tesopito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/69208158560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/34531810873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/81420917260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/71068421541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3633/6540/files/zudagif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/ejercicios_de_paises_y_nacionalidades_en_frances.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2854/4668/files/sadokarorovira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/mefosikiboxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/78822286897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/85805958190.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_off00005acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACB 5204 bytes
SHA-256: df2f1388e560e619f411ce7a8620374ff423be20a9dcb3497c652bf81be6c242
font_01_sfnt_off00006c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C59 14108 bytes
SHA-256: 943266a4bd5c8661baed27ba8c08fba50ac043d394cbfa3a31b74a23d16312e1

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