Malicious PDF — malware analysis report

Static analysis result for SHA-256 74974269e05c497e…

MALICIOUS

PDF

81.5 KB Created: 2020-12-30 21:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a2fb6b47683119d48a60b30e90b8b044 SHA-1: 0d50a0ddd3e777ebfe3eb46881f2d6261dc962cc SHA-256: 74974269e05c497ea25ed0da4180f707521b9593cf4e6afa9fcd14974794e846
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ggtraff.ru' domain. The document's content, though obfuscated, appears to be a lure related to 'Final Fantasy 14 subscription benefits' to entice clicks. The presence of numerous links on disposable hosting and the detection by ClamAV as 'Pdf.Phishing.Trojan' strongly indicate a phishing or redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?utm_term=final+fantasy+14+subscription+benefits In PDF document text
    • https://tatuwimo.weebly.com/uploads/1/3/4/8/134882860/gitemapune.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/lonozowiganufej.pdfIn PDF document text
    • https://nixejinalir.weebly.com/uploads/1/3/4/3/134321479/4c9611b3b3.pdfIn PDF document text
    • https://vobudofokivelux.weebly.com/uploads/1/3/4/5/134599261/sokibimaxuna.pdfIn PDF document text
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/1065558.pdfIn PDF document text
    • https://maladebo.weebly.com/uploads/1/3/4/3/134305387/mujorajilujenikosit.pdfIn PDF document text
    • https://boruwimuruliv.weebly.com/uploads/1/3/4/8/134875556/butegir.pdfIn PDF document text
    • https://sibemawiwojaro.weebly.com/uploads/1/3/4/8/134887292/1461766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471704/normal_5fc5535e39ace.pdfIn PDF document text
    • https://gowubezu.weebly.com/uploads/1/3/4/4/134497845/nutogagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/netinuwa/22083572367.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001030d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030D 5344 bytes
SHA-256: b80fed7e7648ef1524d279528c9cc3fda11d6fc558275cab1b632b94685cac4c
font_01_sfnt_off0001155e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155E 10604 bytes
SHA-256: 1ed8dfc69f49c3f65e78b367f11137eb7a7b5580bb07bfe8029e80abfe3fa904

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