Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e703f021a811e04…

MALICIOUS

PDF

33.1 KB Created: 2020-04-20 00:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9350364622b876b04db6b55795954f8a SHA-1: 5f10ce1b3a78ff3aeb07de9d2a59d4c72052d61a SHA-256: 2e703f021a811e04a585c1bd875ed4bf0f1b4319991669f12958c7a11ae88017
130 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with numerous URLs pointing to PDF files hosted on various domains. The document body text, though heavily obfuscated, contains a reference to a 'contacts message backup app for windows phone' and a URL that appears to be a lure. The ClamAV detection 'Pdf.Dropper.Agent-8901372-0' strongly suggests this PDF is a dropper designed to deliver a secondary payload. The presence of a visual download button lure further supports a malicious intent to trick the user into downloading an unknown file.

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8901372-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8901372-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://scp12.net/uploads/1/3/1/4/131454523/131454523.html#contacts++message+backup+app+for+windows+phone
    • http://ethicallyenchanted.com/uploads/1/3/0/8/130873975/dulejumof-kelarawukaweto-xegogexuzami-dasepukujujug.pdf
    • http://thehitsvillesoulsisters.com/uploads/1/3/0/6/130639906/teripevu.pdf
    • http://gouniqueboutique.com/uploads/1/3/0/4/130435598/4639131.pdf
    • http://ascensionprofessionalcoaching.com/uploads/1/3/1/4/131437984/zukojabu.pdf
    • http://bowennh.com/uploads/1/3/0/9/130969266/zoretaxe-zevom-birawamisi-fozexarizoda.pdf
    • http://ketayloe.com/uploads/1/3/0/3/130323475/kafarovosalarigumaju.pdf
    • http://knowledgesculpturewave.com/uploads/1/3/0/3/130323491/regodaj.pdf
    • http://hearttosoulcoaching.com/uploads/1/3/1/0/131070561/rubodigovizo.pdf
    • http://policyassociation.org/uploads/1/3/0/2/130288458/xadeg.pdf
    • http://ilidances.com/uploads/1/3/0/6/130620689/kekewuxopaguniduj.pdf
    • http://diwaku.id/uploads/1/3/0/2/130270897/e438a10ad01a503.pdf
    • http://alopecian.com/uploads/1/3/0/8/130874585/5674689.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005985.bin
313a993cf211bce7a56b780487a98d36b0e1c3839ca90f02e7ae936cdea1efeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5985 7848 bytes

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