Malicious PDF — malware analysis report

Static analysis result for SHA-256 957699f4d7d1bdd8…

MALICIOUS

PDF

59.3 KB Created: 2020-08-23 03:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bf20f79ebea719118d1d6ab595088d6 SHA-1: 6de46e1604ca16d6ee62505bd39bbbcbef54350f SHA-256: 957699f4d7d1bdd84a7db304b0d8247c2162f2e81ce24504f258821f7afd5e1f
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are disguised as educational materials. One critical heuristic firing indicates a link to a known malicious redirector, specifically 'https://ttraff.com/pify?keyword=yuvakbharati+english+11th+guide+pdf+maharashtra+board'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=yuvakbharati+english+11th+guide+pdf+maharashtra+board
    • http://files.themurphyhousecafe.com/uploads/1/3/1/3/131398322/5246122.pdf
    • http://files.astaseattle.org/uploads/1/3/1/3/131398097/karugut-ziwufuziki.pdf
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdf
    • http://files.soulfulnesstherapies.co.uk/uploads/1/3/0/7/130739204/xowubuzo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7556/files/batwoman_comics.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/38991175017.pdf
    • https://cdn.shopify.com/s/files/1/0437/5999/2993/files/zudaji.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/35305191777.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/dudomapizuvolira.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/cache_cleaner_pro_3._0_apk.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/juwobulo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/57541386507.pdf
    • https://cdn.shopify.com/s/files/1/0429/5262/2236/files/1848558638.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/65062284467.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/o_autismo_livros.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/baxofosujafixi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1060/2661/files/business_process_management_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3785/files/68692320768.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006760.bin
af1cd3902be40f6e23e93e4ed897ca6ca3dd435e713f9c5f15466af2481d099d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6760 5732 bytes
font_01_sfnt_off00007aae.bin
6edd2dc65f8cc0d4bfc465674af3a6957927c9580e196fa1f2ecab0bfce717d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 2024 bytes
font_02_sfnt_off00008445.bin
d3914d2fe5e81d435aaf664b859d594174bd9682c1b4d856ee256eb00fe29f1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 10068 bytes
font_03_sfnt_off0000a716.bin
030743c7cb751e02a8f7cb88020387b08e509c150d02357d97a6110177bea09b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA716 16220 bytes
font_04_sfnt_off0000bc6b.bin
3f9119f1859deba1cdfdba8e6ef25ae8557f1d686abdbee90563aaf02103bf1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6B 10808 bytes

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