Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba48cc704f7f12d…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 17:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b963b91688986ce8e1513be8e923e166 SHA-1: e204ce73cc8b70541e047d90c09f391c4647c5fa SHA-256: 4ba48cc704f7f12d030f407c6623d05929a84abd79efb5f5e9e7af8704f00e7c
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bordereau+cnss+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The document body, though heavily obfuscated, contains text fragments that, combined with the 'SE_INVOICE_LURE' heuristic, suggest a phishing attempt related to invoices or payments. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.cc/pify?keyword=bordereau+cnss+pdf In PDF document text
    • http://dakesonu.safehand.org/uploads/1/3/2/6/132681947/larisi.pdfIn PDF document text
    • http://files.bruceloeb.com/uploads/1/3/1/3/131398366/1016339.pdfIn PDF document text
    • http://files.stephencleobury.com/uploads/1/3/0/7/130776611/2f0b0cfa5f.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/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/32764509668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/seligiwusefozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/geography_book_free_download_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/lilorudewefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/99692663567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/agatha_christie_hercule_poirot_s_christmas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1482/2811/files/12816044358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/bollywood_movies_calendar_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/tedebogurivuxafifoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/sinifeti.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_off0000604b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604B 5164 bytes
SHA-256: 4015e135fa4b1f3efcc3e7ecd70174cf752ebcb9737f88ed782b101fead10907
font_01_sfnt_off000071ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EC 9948 bytes
SHA-256: a138b104e9adb79d0b6d585fa1941b884136226579c344639b939c9fc04ae021

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