Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae2085b2479546d…

MALICIOUS

PDF

43.7 KB Created: 2020-08-18 20:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15be92d0247c50ae3124e2c993118f3f SHA-1: dbf30facbc2398899add77399bcef9e0e4b62727 SHA-256: cae2085b2479546d10d100dfac3ac6e7c53dcb9a34a59c92f3f4352117ee0d11
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for SEO link farming and phishing. The document body, though heavily obfuscated, contains text related to 'security deposit form template' and a URL that matches the malicious redirector. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of malicious redirector links and a fake invoice lure.

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.ru/pify?keyword=security+deposit+form+template In PDF document text
    • http://muweva.rockfordlionsclub.org/uploads/1/3/1/4/131453028/1258905.pdfIn PDF document text
    • http://files.redvalleyfarm.com/uploads/1/3/1/6/131636746/kesigemasador_lesupom_sixolivud.pdfIn PDF document text
    • http://kudare.brsanz.com/uploads/1/3/1/3/131380345/7335ad9.pdfIn PDF document text
    • http://files.rachelcooperphotography.com/uploads/1/3/0/8/130874250/31aa0.pdfIn PDF document text
    • http://voxidaf.thehappyfits.com/uploads/1/3/1/4/131437919/losimapabusuxu-mozef-lodenuv.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/1/0433/5504/6037/files/52097763524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/sdgs_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/vifepam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/comentario_biblico_adventista_del_septimo_dia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0554/files/xelonemawoxotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/52257163964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/all_basic_guitar_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/9574583304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3914/2566/files/57429975431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/zafetazedusabonukufiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/minimalismo_libro_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/59967470428.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 5

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_off00006bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF2 5508 bytes
SHA-256: a96fe2a1a76f16dc38438262c8d9f458ab0049aef0ce8f86094821d03b4b79d8
font_01_sfnt_off00007e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E92 10232 bytes
SHA-256: 9019fd9e6a08a991c2fec2eaa18ce0ece5dcf55389ae003182a22b01060da318

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