Malicious PDF — malware analysis report

Static analysis result for SHA-256 e604b74c21543afa…

MALICIOUS

PDF

69.4 KB Created: 2020-08-06 02:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f174fcdc2c725b98f4c27645e75e97e SHA-1: 1a5d99437a495923dea486c2a2f85de394ff0269 SHA-256: e604b74c21543afa2e2a3c186242f6b19a8f00e8c14b79a87957edada3eb9048
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=bangkok+bts+map+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users into clicking malicious links, likely for phishing or malware distribution.

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=bangkok+bts+map+pdf
    • http://files.hanovergrovehoa.com/uploads/1/3/2/6/132681264/gewap-jerig.pdf
    • http://files.biancasams.com/uploads/1/3/1/1/131163872/makoretet-niwenof-libubakit.pdf
    • http://files.snowleadershipgroup.com/uploads/1/3/0/7/130775257/latifupalote_dopobut_mimonadev.pdf
    • http://files.ahhsdance.com/uploads/1/3/1/4/131454172/6985172.pdf
    • http://files.nysacanecorso.com/uploads/1/3/1/4/131406717/8347771.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/mudizazebuxozel.pdf
    • https://cdn.shopify.com/s/files/1/0440/5719/8757/files/mawadokebupimako.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/arm_cortex_m4_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/fugaruzogina.pdf
    • https://cdn.shopify.com/s/files/1/0428/9436/0735/files/somujobolotufonugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3762/files/13639308760.pdf
    • https://cdn.shopify.com/s/files/1/0428/3816/3623/files/xipew.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/rezapowoki.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2550/files/descargar_caballo_de_troya_5.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/ap_chemistry_zumdahl_7th_edition.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_off0000b297.bin
2c24981553d63ef095685b73bad38f0f5752dc508cda545de3ca74c991968f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB297 5484 bytes
font_01_sfnt_off0000c52a.bin
83b7a34c20d9e8e8f64493189cd2db3eebf596fd0c149507c76cd796ad34d56c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC52A 10612 bytes
font_02_sfnt_off0000e2dd.bin
e5f7a3bddb1e7a55a5d3c64e3133445e0babf89b2a7f0f8a4da474b22ac8ddbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 10952 bytes

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