Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d8dc3511ee0fdd…

MALICIOUS

PDF

35.2 KB Created: 2020-08-12 11:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf7eeae2298d1496e0a9ae77f4a53c31 SHA-1: d431f84d45fe81fb4e2f863e6dfd3aff6fb35764 SHA-256: f3d8dc3511ee0fdda0e53106765166f0893297fee507167df07b37d6518b3250
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a file conversion service, which is a common social engineering tactic. This link, 'https://ttraff.cc/wb?keyword=converter%20arquivos%20xml%20para%20pdf%20online', is flagged as a malicious redirector. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation to increase visibility. No scripts were extracted, but the primary malicious activity appears to be the redirection via the embedded URL.

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/wb?keyword=converter%20arquivos%20xml%20para%20pdf%20online In PDF document text
    • http://files.kellycraigdesign.com/uploads/1/3/2/6/132682868/368.pdfIn PDF document text
    • http://files.hcindiansbasketball.com/uploads/1/3/2/6/132682386/zezixevilarononun.pdfIn PDF document text
    • http://fikujato.whitridgewellness.com/uploads/1/3/0/8/130813528/4857101.pdfIn PDF document text
    • http://files.alesiaart.com/uploads/1/3/0/7/130740625/d6c843c01eea5.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/1/0428/9187/0375/files/4918672896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/liberolunix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/karafebexazuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/gipelikixurax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/jebagopigutugojurunidamev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/tanatologia_veterinaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/terok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/ielts_academic_word_list_with_definitions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/statistical_models_and_methods_for_lifetime_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/ribabowagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/types_of_roller_bearings.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 4

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_off00004b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5348 bytes
SHA-256: 395fa8614f6b8a12c633b166f78fedd02b47985685aed4e78218f53af1f1967c
font_01_sfnt_off00005d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D99 10032 bytes
SHA-256: 864ecaab3dd00a329778c2ec7e5ca172ae36265bb07d855cbba73aff5966b35d

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