Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e11580e6725935…

MALICIOUS

PDF

39.3 KB Created: 2020-08-28 00:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 971c50d14291e3e6d850459407ed1856 SHA-1: 0e49ae97fc4d867ac6c7229065e3e8be99f69249 SHA-256: c6e11580e672593593c24ecb626a4157cfc4bf2e8408fb3ff27a125649af0934
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.link/pify?keyword=exercices+de+conversion+cm2
    • http://moxufuneg.shoutsave.com/uploads/1/3/1/3/131381762/ruledepatufuwod_topojuzasa_bemavifasexowoz_ponijekubipop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/convergencia_uniforme_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/sewing_machine_parts_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62222626122.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/vawugilidigufixino.pdf
    • https://cdn.shopify.com/s/files/1/0435/5624/1557/files/gesilowamamatedegat.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/78700235781.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/80220308419.pdf
    • https://cdn.shopify.com/s/files/1/0437/8532/2658/files/bliss_tagalog_movie.pdf
    • https://cdn.shopify.com/s/files/1/0433/8348/8679/files/31981421716.pdf
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/catalogo_avon_campaa_4_2020.pdf
    • https://cdn.shopify.com/s/files/1/0441/3590/7480/files/4277939269.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/77342588151.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/babit.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_off000057d0.bin
c2960d1b0909f354ce2790bbdf3c9b4cfb0cf137cf05723f7be282bcab816094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D0 5060 bytes
font_01_sfnt_off000068f6.bin
53928f4f98ce40e781d2d8b96ac768054fedc3f90ab6a6954292d335dcfd2def		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 11880 bytes

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