Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb12ce80728997a…

MALICIOUS

PDF

48.9 KB Created: 2020-08-22 17:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0cbad25f6132260e7f78a67ba79dfc0 SHA-1: ba49c4aaa7d10caca2f312617f291fefa92c5245 SHA-256: 9bb12ce80728997a6447560e9cc93bf4b5b7b831c39a5b512d144cc43dfe5e3e
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, indicating a phishing or malicious redirection attempt. The document body, though partially corrupted, includes the target URL and references a worksheet, suggesting a lure. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious redirection pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=base+rate+percentage+worksheet
    • http://pufopebus.colorsofthewindhorsefarm.com/uploads/1/3/0/8/130874063/8840827.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0435/8576/5535/files/52620081021.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/gidojavigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4589/files/pagugerugosobekuvo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/petukiposuruwusevasives.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5832/files/doxovusinato.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/34098026403.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/reporter_live_photo_lagana.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/mefafidemumawaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/baresapolumulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/ramem.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/jagojojofudulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/97648408033.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/lewifojenazijifowefa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000795a.bin
271f69ba4ad40e96685f84f09857ee0e1140df6096d1a376bede5e6ab345bd9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795A 5368 bytes
font_01_sfnt_off00008ba8.bin
865d539609c2643e5a5a6159b0d512d9a6563a279b1c30b79de9dfea87d61675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA8 13408 bytes

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