Malicious PDF — malware analysis report

Static analysis result for SHA-256 e627b6bb0b941b40…

MALICIOUS

PDF

96.9 KB Created: 2020-08-05 02:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7638fd0fe5ebc30a549ec01339d12ef8 SHA-1: d40671fd9925b4ece4432b989f1359f29d6d1c37 SHA-256: e627b6bb0b941b40f89245ca3b3ccabe7fd1f52218181dceee83342b9db15748
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=apache+poi+example+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure.

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.cc/pify?keyword=apache+poi+example+pdf
    • http://files.petalsofme.co.uk/uploads/1/3/1/3/131384771/bizenepeke.pdf
    • http://files.naturalstrandsofbeauty.co.uk/uploads/1/3/1/3/131382595/guzokosebobo.pdf
    • http://files.royackerskennels.com/uploads/1/3/0/8/130813364/9519582.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/zoterora.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/gesogejozudoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/www_metacritic_com.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/verizon_bill.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/56641149007.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/rokuf.pdf
    • https://cdn.shopify.com/s/files/1/0440/3786/5637/files/jonesabigorijojojilik.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/63350672580.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/misres_du_dsir_alain_soral.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/a_tribe_called_quest_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/68082823319.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_off0001341e.bin
3d05d2541b1beb82bcff9f792ac8695d90c2f612164a981c3eccd181219af8f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1341E 5176 bytes
font_01_sfnt_off000145a0.bin
0dfa7336787fc629b246a8fa001534880b3c17cd45278ce2b359a61f8e69ef4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145A0 15332 bytes

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