Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa7ab7f0e1b5d655…

MALICIOUS

PDF

63.4 KB Created: 2020-08-04 02:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bff722671353fe019441e2675005a62f SHA-1: 7fd5f03cb539d6d95c989f47936e32b2caa6b32f SHA-256: fa7ab7f0e1b5d6550abc790a222b856478694710c25ec3e3d06b4f1184f768c6
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL 'https://ttraff.ru/pify?keyword=asian+continents+countries+and+capitals+and+currencies+pdf' is the primary indicator of malicious intent, designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains text related to countries and currencies, likely serving as a lure to encourage clicks on the malicious link.

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.ru/pify?keyword=asian+continents+countries+and+capitals+and+currencies+pdf
    • http://files.liberationgifts.com/uploads/1/3/0/9/130969211/a3fb0311f315.pdf
    • http://files.lakrewefc.com/uploads/1/3/0/7/130775634/nedoxe.pdf
    • http://files.celestechen.com/uploads/1/3/1/4/131407767/revumu.pdf
    • http://files.texascedarblinds.com/uploads/1/3/2/3/132303082/nusoxosaforegom_juxebabapatuni_mawirakivakixez_kaxixejowibar.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/fakuduvubejifu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/class_of_heroes_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/fuvoralajesudisof.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/21377933183.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/zaxapowadizexenipum.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/depeleranejazaruvan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/79516230.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/56313311726.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/64309757955.pdf
    • https://cdn.shopify.com/s/files/1/0434/1982/8386/files/4743321870.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/50526812818.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078cc.bin
37659d830926d2b7fc99824557a87f71f750a0a0dcffc241d04e323b55f54c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CC 5140 bytes
font_01_sfnt_off00008a51.bin
fb9a9d6d956734aafa617145bc4294d680f35380ebfe4cccb0c41768ced05ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A51 3852 bytes
font_02_sfnt_off00009649.bin
a313e22387c7e4b9749988dc41ee1aa3dd5931941e4c1c19769d44b9562f5cf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9649 3980 bytes
font_03_sfnt_off0000a23d.bin
cef55f7c0e658d2f284fb0a8da24635d22fe1a3d5c175e6023af4f3414d0560e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA23D 15856 bytes
font_04_sfnt_off0000d3bd.bin
2ee3ea36d220fc160c10cd52fa419f50fff3c3d79bbfa0ba95aa4e9bfa64d4bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BD 17608 bytes

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