Malicious PDF — malware analysis report

Static analysis result for SHA-256 51c12b861912d206…

MALICIOUS

PDF

55.0 KB Created: 2020-08-12 13:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ddbd7b1a063a297e7371e780704dc44 SHA-1: d59aeeede412bac040789675104000af4ab9950e SHA-256: 51c12b861912d20644889b18376a278f5656c840bf5ff30d8d7219a6b3d5ac22
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a link to a known malicious redirector, specifically 'https://ttraff.cc/pify?keyword=klasifikasi+batuan+beku+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous Shopify-hosted PDF links, while some are benign, contributes to a link farm strategy to potentially improve search engine ranking or obscure the malicious intent.

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/pify?keyword=klasifikasi+batuan+beku+pdf
    • http://files.directactionfilm.com/uploads/1/3/2/7/132740892/mixom-vuwulijaxexu-zoxasuwelat.pdf
    • http://files.angelalizon.com/uploads/1/3/1/4/131482881/punegi.pdf
    • http://gusemi.theuniqueboutique.co.uk/uploads/1/3/0/7/130739751/2a6d9a.pdf
    • http://temofeku.violetsfloraldesign.com/uploads/1/3/2/6/132695278/pikopezotavomunukuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/administracin_de_empresas_teora_y_prctica_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/4262157550.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/81465096885.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/labanumuren.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/povuwinijafo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5016/2581/files/34059265908.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/projeto_piscicultura_tanque_escavado.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/95891463516.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/migufozonumedowaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/52312216998.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/82876071800.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/john_deere_14t_baler_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/67288832927.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/40575723279.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/english_grammar_questions_download.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/
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/40575723279

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009168.bin
703ec4f4838576ec857a85aabf25d14e4ebcee37129275616ba64c9b06484bb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9168 5112 bytes
font_01_sfnt_off0000a2ce.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CE 1800 bytes
font_02_sfnt_off0000ab5b.bin
8ed8b156499cda955b6a589c629dc6bdc40f287fc051ab1009f0fc7ce82b9056		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5B 10328 bytes

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