Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e7a8c8478827ab…

MALICIOUS

PDF

71.2 KB Created: 2020-08-20 00:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 605775a1637cbd945cdf6df4683efaea SHA-1: b3d9dbeea5b081cfc29b541b060268eebb093e10 SHA-256: e4e7a8c8478827abeb4a2a8a3e203f714d3f8cfd62004afc89bac3ed8be25ddc
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=food+chain+worksheet+grade+7+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a social engineering lure disguised as an educational worksheet. The presence of a link farm heuristic further indicates malicious intent to drive traffic to external sites.

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=food+chain+worksheet+grade+7+pdf
    • http://rotokot.masteringphotography.com/uploads/1/3/0/7/130775940/90e5655.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5030/files/64596108126.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/remove_from_array.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2382/files/maniac_magee_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/tnvipsuite_play_it_again.pdf
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/6868045536.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/adani_ports_annual_report_2020_18.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0044/files/asap_ferg_work.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf5f.bin
dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5F 2828 bytes
font_01_sfnt_off0000d959.bin
0946e0ac726d9433d5ef179d73f3e853915d09c26ab237d281d3c711fcae7561		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD959 5576 bytes
font_02_sfnt_off0000ec68.bin
b168328e6ab260607155fa2502539cee5d6f448e8f70298902da5c0a505529c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC68 9852 bytes

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