Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ff0ce059df00a3…

MALICIOUS

PDF

41.4 KB Created: 2020-08-07 06:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee30273a08aea0115fb7c696b1a3c745 SHA-1: 4cf6ef574ea59d926a466fdbd77930cabcdd19c6 SHA-256: 53ff0ce059df00a3ce04e2926bfaa78f96066d337b5ad9f60bcd52eb25a13e01
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects through 'ttraff.cc', a known malicious redirector. The document body, though heavily obfuscated, contains the text 'low back pain exercise guide pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

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=low+back+pain+exercise+guide+pdf In PDF document text
    • http://files.originalcable.com/uploads/1/3/1/3/131380001/758cdb.pdfIn PDF document text
    • http://files.jaspercountygeorgiadems.org/uploads/1/3/0/7/130776790/1950478.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdfIn PDF document text
    • http://files.lakeshorecenteratokoboji.org/uploads/1/3/1/1/131163683/8525124.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/1/0435/5833/8715/files/nojumoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/fusatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/91731764130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/oxford_american_english_file_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/78527664232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/77478683323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/carbon_nanotubes_preparation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/sunifaruborawomoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/journal_carbohydrate_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/maworeb.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_off000063ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 5596 bytes
SHA-256: ee3e7eb243ce6292da72bc24d8f68aca667e56eedc3867e74f193130aa96d049
font_01_sfnt_off0000772c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772C 9900 bytes
SHA-256: 82a794332a924aaa641bd10857da8af6fd0120888e4947c9f44ef845b552354e

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