Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d2c147fb452014…

MALICIOUS

PDF

36.3 KB Created: 2020-09-02 02:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0320161a37c4d1ea6c9c8c68fa46d8ee SHA-1: 5377afa10819094e0b24cd28b3bfbdeb5159da51 SHA-256: e0d2c147fb4520142a9cddac418ece2954ec5fd754bf1558d60bf2f555f65fcd
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as shipping label templates. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the document. The primary IOC is the malicious redirector URL.

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.cc/wix?keyword=avery+shipping+label+templates+5164
    • https://static.usrfiles.com/ugd/b8c837_fbecc9a1d58c46e9b45e70e6f34fd5c9.pdf
    • https://static.usrfiles.com/ugd/67e251_85bb045e17b042609b2fe203a91c3435.pdf
    • https://static.usrfiles.com/ugd/b8c837_c92f4522ecec46d59c1ac33ac279b3f8.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/81456264291.pdf
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/programming_massively_parallel_processors_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/50699434444.pdf
    • https://cdn.shopify.com/s/files/1/0461/7702/6201/files/ps3_emulator_android_bios.pdf
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/16060763924.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/tareekhi_books_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/sojazomugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/bivizagikenabuwun.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/ithaca_college_campus_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/blob_to_angular.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/repizos.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/zulagigixuma.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_off00004cd6.bin
d73b231dd1c98cec6f2490d7e36a7da809f17c0752b2251d153c61da18b8d629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD6 5940 bytes
font_01_sfnt_off00006107.bin
0cab43f14b0f0e6f2259dda26fb2c9090e7cee516681104608396ebc2a8a8cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 10296 bytes

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