Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2918ac82a2b94d3…

MALICIOUS

PDF

41.2 KB Created: 2020-08-29 22:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 047cf10260034402bb4633f1ebcb8dad SHA-1: 1856d07caa26686462326eb5a61e0877311f6478 SHA-256: b2918ac82a2b94d37efb51c6b8a158d62c57aa67d029faaf76d942cc42946b25
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link leading to a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Adobe illustrator cc 2017 skills tes' and the malicious URL, suggesting a social engineering lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly indicates the intent to redirect the user to a harmful site.

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=adobe+illustrator+cc+2017+skills+tes
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/tobulabaximuxufujexo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/venujotofusake.pdf
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/32382679425.pdf
    • https://static.usrfiles.com/ugd/b65acf_24ac7c1259514ba2bf1e805a2fd9cad0.pdf
    • https://static.usrfiles.com/ugd/b8c837_edaa6cb7a74a450c919441e89df33d72.pdf
    • https://static.usrfiles.com/ugd/b8c837_965c8c0373814048ad8d9eb9b11ac205.pdf
    • https://static.usrfiles.com/ugd/856cea_4b3b1573b7d248a5819bce7a542300ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_4cb3ad1242f04be28a2eabfdc0afa6fb.pdf
    • https://static.usrfiles.com/ugd/6116da_4379245ec0b7479bbc220617552489b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8b19e7a49484c258ee85c137f1dec9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfe2ad1adfcd4f928cdced644920cae8.pdf
    • https://static.usrfiles.com/ugd/b8c837_10ef68244060448abd7ba5d1a41ddbec.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/com_lge_hiddenmenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/cannery_row_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/bread_bakery_business_plan_in_nigeria.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_off00006117.bin
42ffb21a7a0e437da72495a03749ca7b20af5ad9f0e600b2b68ca301e8c2ae12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 5532 bytes
font_01_sfnt_off000073f9.bin
70cf0fcdf7a9a9b065d02c31ec8b3beb6ec997b2b4d5ec12fc5e3787b249447d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F9 10532 bytes

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