Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee04a31d07748dac…

MALICIOUS

PDF

44.0 KB Created: 2020-08-28 06:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 001540e1971dc445d2a5db27b2500718 SHA-1: 4a26245c5c89d7763106151b0eafa452f53e012b SHA-256: ee04a31d07748dac9f112a26ca55b71c83a85f0bc12d61737bd0467a003a1195
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to click on malicious links within the document.

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.cc/pify?keyword=jurnal+teori+belajar+kognitif+pdf
    • http://joton.olgabaptist.org/uploads/1/3/0/7/130775565/xekanotudabefinapesu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4313/3352/files/laziganozekamisojoner.pdf
    • https://cdn.shopify.com/s/files/1/0433/4020/2142/files/bailey_knox_porn.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/sawotevekono.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/african_fat_tailed_gecko_care_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/96601555874.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/lurakaxopololo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/62294812568.pdf
    • https://cdn.shopify.com/s/files/1/0438/2723/2918/files/starbucks_fdi_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/holding_me_back_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/mexik.pdf
    • https://cdn.shopify.com/s/files/1/0439/0410/6651/files/lutumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/14355499089.pdf
    • https://cdn.shopify.com/s/files/1/0432/2652/9956/files/witatesas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/45956296695.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_off00006412.bin
fed35419bd522bf6b4596ab1285a283b1359d4d82c061282ab86665e752f2322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 5300 bytes
font_01_sfnt_off0000762b.bin
c44aa6e99b136088e29fdff874a1f3bfb3d1080be0225ad70825ffe3ea7e0d38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762B 14720 bytes

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