Malicious PDF — malware analysis report

Static analysis result for SHA-256 c743aa3c7c2012ae…

MALICIOUS

PDF

54.2 KB Created: 2020-07-28 18:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb20cb069934332de123fdfbd806a45e SHA-1: 17960dbb1cf6121403ae9c83ac30574b15dec65e SHA-256: c743aa3c7c2012ae04a2071d44bcc4fed3c5b99e304f93e284b56d43c4b7f9e3
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains heuristics indicating it is a malicious redirector and part of an SEO link farm, designed to lure users with fake invoice or advance-fee scam language. The document body, though heavily obfuscated, suggests a 'promissory note' lure. The primary malicious IOC is a link to 'ttraff.com', which is known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=simple+promissory+note+sample+letter+pdf In PDF document text
    • http://files.centre5pinbowl.ca/uploads/1/3/1/3/131398583/tuwawolomegi.pdfIn PDF document text
    • http://files.casacarina.co.uk/uploads/1/3/2/8/132815003/6b8ec1e0.pdfIn PDF document text
    • http://files.fit-sana.com/uploads/1/3/1/3/131379899/kokuseteriz.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/1/0433/8201/4108/files/zajejuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/videpijemajezeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/11721486645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/27274309452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/dadifalulovadevasobudeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/63575682808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/xekokigamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/watilimigusoradawiwitot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/38467034026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/80290464708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4384/7328/files/fijasijigemejimudob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/60232750255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/15199487463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/kudevibuxubowusututepipo.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_off000095be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95BE 5180 bytes
SHA-256: 6ea3b0ac5d78a70d98a357d26865bd06d7266babf8b99ad97d06f6e316f7a506
font_01_sfnt_off0000a735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA735 10512 bytes
SHA-256: 70c1be3cff7a03a30a3113e5dc5813b8d0bb5a0d87054a2c37196c3e715f9819

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