Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5df9bd86f4f7705…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 20:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cc5b2a889d2c0be4890623e69ae4593 SHA-1: dc674c0b06d375e8244d33b90bc0065c7b0c2b3f SHA-256: d5df9bd86f4f7705b584f79be5d65d419a5460fd324db63a0e390fcfabe01007
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=gate+2020+application+form+correction+date'. This indicates a phishing or scam attempt. The document body, though heavily obfuscated, contains references to 'Gate 2020 application form correction date' and the malicious URL, reinforcing the lure. The presence of a PDF link farm suggests an attempt to distribute malicious content or engage in SEO poisoning.

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=gate+2020+application+form+correction+date
    • http://files.whattowearinlondon.com/uploads/1/3/1/3/131383456/8a8f03.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0463/3470/5821/files/the_town_movie_in_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0438/0078/9154/files/soda_crack.pdf
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/41804292177.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/61161298885.pdf
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/5464094536.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/harvest_moon_animal_parade_iso.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/56182656522.pdf
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/fifokureveto.pdf
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/sabozuwexamirozobirij.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/balance_sheet_analysis_software.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/tifisopa.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_off0000614b.bin
ee5bce9f1c29dc8a52dd421576e80318039b37e934e8788e6416163561f5f5ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614B 5428 bytes
font_01_sfnt_off000073b0.bin
3dafb8e9e4b4ec9ae3d954ca01a37a5d9b82f559d31ea6fd5c832a0c9524e322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B0 11316 bytes

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