Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48b3147bd5f10a3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-01 16:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49a45ea02bf09a8e918760c46e180c9f SHA-1: b4d95f916adabc5d827dcab12628bf5313178e5a SHA-256: c48b3147bd5f10a3629bab682e4a291d7dacb874413fa007715f9e83ca794aeb
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, many of which point to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cs+go+autoexec+location', suggesting a lure to trick users into clicking malicious links. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a malicious site.

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=cs+go+autoexec+location
    • http://files.c3horsemanship.com/uploads/1/3/1/3/131379990/vikulezu_pemedot_sudojora.pdf
    • http://files.houseofsweden.us/uploads/1/3/1/4/131453253/c3fd49e51d3.pdf
    • http://files.polishfire.com/uploads/1/3/1/3/131384638/6812030.pdf
    • http://files.roripaughhills.com/uploads/1/3/1/4/131407080/2360d.pdf
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
    • https://cdn.shopify.com/s/files/1/0435/6715/3313/files/keveruwiralerukupusuliw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/13547162179.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/61740020770.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/98766671033.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/lobeluvuratazogosod.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/xisisodexofekiwiterukerir.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/65874554579.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/jugozevukasumor.pdf
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/salobazojadunowutup.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/sikikarol.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_off0000650e.bin
5775a74d423474f376df92728aa5612bc440742257818794b9af3ac5ecf5fff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 4844 bytes
font_01_sfnt_off000075a3.bin
28ab957233a7563a5a0a2f9e5d4d640c6d1e3c28f2aa6a722dabad320e2d5b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A3 10208 bytes

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