Malicious PDF — malware analysis report

Static analysis result for SHA-256 210136f703b5c7a8…

MALICIOUS

PDF

48.2 KB Created: 2020-08-06 16:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70f143f1460d47e0df87916447ac1030 SHA-1: 73bc4ca2702dbe1ca88c3d75e3b77851f7f20816 SHA-256: 210136f703b5c7a89df1cd41311f02f51bb826c788ecd3b5377b653a723d07d2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=augmenter+sa+confiance+en+soi+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with multiple links hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL. These factors strongly suggest the document's primary purpose is to redirect users 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.ru/pify?keyword=augmenter+sa+confiance+en+soi+pdf
    • http://files.tonystledger.com/uploads/1/3/2/8/132815924/6686937.pdf
    • http://jegumadi.kristaparrpainting.com/uploads/1/3/1/4/131453194/f0fdc7ec3a33de1.pdf
    • http://files.henriettagee.com/uploads/1/3/0/7/130775649/4801883.pdf
    • http://weranasix.firstbaptistchurchofmantua.com/uploads/1/3/2/3/132303189/2183644.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/59404863161.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/zefipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/rojiwupakujebiribivizotam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/54705676975.pdf
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/mom_son_3d_sex.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/rikokub.pdf
    • https://cdn.shopify.com/s/files/1/0431/0361/7173/files/57680437717.pdf
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/14906599078.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/mumonapebenowebiwanataraw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/27802457600.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/
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/fil

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006493.bin
c3ff6095c399fee7441d7eb4c0c5f2e3a5499f43dc43fb077b5506f86cc89bc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6493 5316 bytes
font_01_sfnt_off00007680.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7680 1800 bytes
font_02_sfnt_off00007f0e.bin
43a61561b0252f0619aaa3d35bb7f6ceed75a12d5b801de199c6453db3abcaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0E 11648 bytes
font_03_sfnt_off0000a386.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA386 4324 bytes

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