Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75fbf5dc78494d4…

MALICIOUS

PDF

58.2 KB Created: 2020-08-02 01:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4611dda04684b2e7285675873c37d10f SHA-1: ad862514f13d71deadaa4b992f79874d17271427 SHA-256: e75fbf5dc78494d417a4d2363f44ce8a92170676b5137d7425b55b7f67eb5310
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is further associated with a 'skins stealer for minecraft' keyword. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one to 'cdn.shopify.com/s/files/1/0434/7238/8246/files/babudu.pdf'. The document body, though heavily obfuscated, contains the same redirect URL, reinforcing the malicious intent. The primary attack pattern involves luring the user to click the malicious link.

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.com/pify?keyword=skins+stealer+for+minecraft
    • http://files.fakoamerica.org/uploads/1/3/1/1/131164425/darasemozax_nodidama_vupijizojufu_neguz.pdf
    • http://files.letchercountyfarmersmarket.com/uploads/1/3/1/6/131606687/fexomurotupagifa.pdf
    • http://files.collegeparkgirlsbasketball.com/uploads/1/3/1/3/131381363/4ec002fb.pdf
    • http://files.circularfood.net/uploads/1/3/0/7/130776167/bugub-zozeboz-wivolaxak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/babudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/rixufewilagazenoxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/sewedubuxazosivusovaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/24188104580.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/6778469529.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/57961058999.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/81381398112.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/9551904780.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/kupamuziga.pdf
    • https://cdn.shopify.com/s/files/1/0430/5249/9095/files/leguxotibimunukuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/7727/9652/files/27342348113.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/pimifededubilumem.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/23874399589.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_off0000a69f.bin
2baa4699d318dcc7b13fd29ae863181fc1e50a7f3f03024855be2bcc66397dc8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA69F 5196 bytes
font_01_sfnt_off0000b838.bin
c742d3668a8a88e68ba58455fb5d7b1369502db0c9aba4233fdf1f3e515e3c27
pdf-font-stream PDF embedded font (sfnt) at offset 0xB838 10392 bytes