Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33e6dd324726880…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 20:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21c08a85bc6bb3920d5e5b8318ceedb7 SHA-1: a3e7726731441f44804839cdbf60d2dac060cb4a SHA-256: c33e6dd3247268808c535b6e201067c7918e62bbaf4c15d8f8f7d1067eb80054
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though partially corrupted, suggests a lure related to 'housing allowance form for clergy'. The PDF also contains a large number of external links, many pointing to Shopify domains, but at least one is confirmed malicious. The ML classifier strongly indicates 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=housing+allowance+form+for+clergy In PDF document text
    • http://guxoxokak.pamperandpreen.co.uk/uploads/1/3/0/7/130738755/jusugo.pdfIn PDF document text
    • http://files.hunterabc.org/uploads/1/3/0/8/130814421/f2bc29bc61142.pdfIn PDF document text
    • http://selepezi.ombutters2.com/uploads/1/3/2/8/132814930/2207632.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/1/0433/7503/4520/files/85598814671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/understanding_the_linux_kernel_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/narezodususududeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/18678548536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/pukalex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2780/6883/files/40958968775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2304/6568/files/meboluxanavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7803/1262/files/22070354497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9353/0526/files/jifoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.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 2

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_off0000678c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678C 5356 bytes
SHA-256: 6443994c8feb14d3742b97a18b073c7b7c0c398d1ad385189dbaed6fc8653ddf
font_01_sfnt_off000079c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 10644 bytes
SHA-256: 5d2210886483eea2c9d4698554c07ac5a512d5de265dccdac1ee30448089db50

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