Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9a7504742a4ae5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-08 04:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6eb50671c08806055373dfbeddc0cf6a SHA-1: b9a7aa21f61a8b01245095effd0942a85226bceb SHA-256: 3c9a7504742a4ae5ce883e3cac8bb4a7247e6c80cb6086ffba937793f28a74e2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL 'https://ttraff.com/pify?keyword=thyroid+disorders+pdf' is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to 'Thyroid disorders pdf' and the malicious URL, suggesting a lure to a scam or phishing 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=thyroid+disorders+pdf In PDF document text
    • http://files.catherinebeerdabasso.com/uploads/1/3/2/6/132682819/buvotur.pdfIn PDF document text
    • http://files.runnerstoke.com/uploads/1/3/2/3/132303219/074809ac71.pdfIn PDF document text
    • http://files.lunagardenmontessori.com/uploads/1/3/0/9/130969761/3221287.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/1/0430/2422/0321/files/juduluzupoforunebaxozuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/71901610403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/mudimorelegogedunaxuxak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/14471085213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/dadokurevulelinonefefubax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/90909785334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/42127385032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/adobe_illustrator_export_artboard_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/blessed_be_your_name_chords_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/domatejujogipebigufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/37770013011.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_off000064a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 4936 bytes
SHA-256: 2ac043bacd673b7b1308b0eacfdc362ac7bf7fd6a9ce62d80d9489c068e8b9e6
font_01_sfnt_off0000756e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756E 9872 bytes
SHA-256: 97aa7deca86b727cef471e37ab0ac3722783305f5929e2727c74a882bb0e17a1

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