Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0567b0a990146ef…

MALICIOUS

PDF

53.2 KB Created: 2020-08-12 12:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0f5a3e6e0fd095dd2292ca68e340a77 SHA-1: 1f06880f53b2d5cfa2b9babe2bc2b22034d04bf9 SHA-256: c0567b0a990146ef3c5a5d0418549a011ada15d479ad3cf116953e827c7958f4
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=human+physiology+book+in+telugu+pdf'. This URL is presented within the document body, disguised as a link to a book. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly indicates maliciousness.

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/pify?keyword=human+physiology+book+in+telugu+pdf
    • http://xumuxe.artsforart.org/uploads/1/3/1/6/131606289/defelavoxuvaruz-gamenufo-jufizevoguwif-zojodu.pdf
    • http://jofetiju.alliesonthejourney.net/uploads/1/3/1/6/131607600/tonibusasuguj.pdf
    • http://files.thebdayproject.com/uploads/1/3/1/3/131379803/26253dfc1e68254.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/41565805534.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/9903961160.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/visosidebi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/microsoft_virtual_wifi_miniport_adapter.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/bacterias_gram_positivas_aerobias.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/exodus_pusha_t_mp3_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/xusetudo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/biblia_de_estudio_nelson_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/97956458448.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/13102321805.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/37984316233.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/55061941071.pdf
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/2239525400.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079a0.bin
8cc46bf281d927433835c27758d209fe3e53838c1e253f2ceda82f490cefa779
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A0 5628 bytes
font_01_sfnt_off00008c93.bin
be8a1dcb0edf861938c58d258dac17c745b084ff00d31fb013929108eebbc59e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C93 2532 bytes
font_02_sfnt_off00009776.bin
0c72895de577dc73c4bc184aa3991a5b888a49c2c879c361f5402259e9f6c05b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9776 15372 bytes