Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49f15722af98653…

MALICIOUS

PDF

40.1 KB Created: 2020-08-31 11:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1507f245ae578e30c26f0fd4d4b9ba2 SHA-1: da4b8636e1cb9beb63aef879313a599b9fa96ac3 SHA-256: c49f15722af986530d97307fbe4a434c2f6b8e2db32e034035718742d34c729b
150 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, specifically pointing to 'https://ttraff.ru/wix?keyword=kasaba+film+izle'. This link is presented within the document body, suggesting a social engineering lure to trick users into visiting a potentially harmful site. The presence of a large number of external PDF links also indicates a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=kasaba+film+izle
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/descargar_biblia_de_estudio_esquematizada_reina_valera_1960.pdf
    • https://cdn.shopify.com/s/files/1/0435/6984/0283/files/11478953495.pdf
    • https://cdn.shopify.com/s/files/1/0433/5524/2651/files/mirikedenirotubifemanife.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/44490957904.pdf
    • https://cdn.shopify.com/s/files/1/0433/9335/1843/files/calendario_feriados_2020_argentina.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/rivow.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/english_grammar_book_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/26213681137.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/45238625765.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0992/files/c_source_code_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/kuxepedex.pdf
    • https://static.usrfiles.com/ugd/b8c837_550e1608d7534594aaa9e56f712f9d10.pdf
    • https://static.usrfiles.com/ugd/e2f197_fc492d1177284c2d9b80af5572ff3789.pdf
    • https://static.usrfiles.com/ugd/6cf392_b9356ba8822e45f5940e32cfcae65273.pdf
    • https://static.usrfiles.com/ugd/b8c837_74e3707b6826426d9c56d050c3e0849f.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_off00005b43.bin
69dc88ae35800e761c0ebbdeb7c2958883aac07ff81802b7e2198ca608fb2acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B43 4976 bytes
font_01_sfnt_off00006c2c.bin
178070f5be06303c8d97b748a4a3c8174f3c76faa73656668d605858f80a4d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2C 12148 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.