Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee647ebc8a6916ab…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 10:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 615d72fd032da517f4457845947e4a0d SHA-1: 2f0946c45cb233768d40562b8cbb29bac356db68 SHA-256: ee647ebc8a6916ab1de5dc055f025938ec6bbc2d59af403c80f1ad3f3108c836
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=diccionario+sinonimos+y+antonimos+en+ingles+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with multiple links to external PDFs. The document body, though heavily obfuscated, contains the same suspicious URL, suggesting the primary intent is to redirect users to malicious content. No scripts were extracted from this sample.

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/wix?keyword=diccionario+sinonimos+y+antonimos+en+ingles+pdf
    • https://static.usrfi
    • https://static.usrfiles.com/ugd/0d2908_1887473723fe40cbbc77c14c72ae9a51.pdf
    • https://static.usrfiles.com/ugd/eaf48f_77d28fd1685641c1afb5685a17d063fb.pdf
    • https://static.usrfiles.com/ugd/97493d_605d0e803992470d864ee5f2a015cb08.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a1106e07fa74690aa14897735df7630.pdf
    • https://cdn.shopify.com/s/files/1/0429/5743/9129/files/lump_of_fat_wax_sekiro.pdf
    • https://cdn.shopify.com/s/files/1/0436/8941/0713/files/absorcion_y_secrecion_intestinal.pdf
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/leviton_timer_switch_vpt24_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/83459407732.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/house_rental_agreement_format_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/9842229493.pdf
    • https://cdn.shopify.com/s/files/1/0433/2974/9147/files/beers_criteria_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/functions_of_labour_law.pdf
    • https://cdn.shopify.com/s/files/1/0460/4008/8740/files/putamatepazupizilezefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/fatixudagosotefira.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/pumapalutowebefekopuf.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_off00006d17.bin
ec08dc2c8a71698c186d16b5d5136e3e0047ca8c40daebaf9078155564c62c35
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D17 5576 bytes
font_01_sfnt_off00007ffa.bin
cdc3c7a5abb4722ac9d6ae438b668ca74ae1853adbeb884f25bc883b96766cb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFA 11364 bytes