Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef7698c790c912d…

MALICIOUS

PDF

33.3 KB Created: 2020-08-20 12:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7881a10f678b973a9da8c28381a8741f SHA-1: b01c23034a9a729e9ce0bb043be062b915e50434 SHA-256: bef7698c790c912d60f0edaaf6dcc8713d30575941e8ad2b6c87a3dfabd7cda5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=google+plus+apk+2017'. The document body also contains this URL and mentions 'Google plus apk 2017', suggesting a lure to download potentially malicious applications. The presence of numerous links, including those to benign Shopify domains, indicates a link farm strategy to obscure the malicious destination.

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=google+plus+apk+2017
    • http://files.thesensualist.org/uploads/1/3/0/9/130969235/limexax_fakik_rofanod_gitun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/vedefovaxewaje.pdf
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/tajorovazan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/adhyatma_prakasha_karyalaya.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/35337277374.pdf
    • https://cdn.shopify.com/s/files/1/0446/9476/5724/files/82614495022.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/php_multiple_constructors.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/wevegubafavotamikok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/wigikarutopizujatu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/blog_de_libros_juveniles_romanticos_para_descargar.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_off00004518.bin
a000af362171392e2b438fad805cc6897f673b5c8c412076806eebf4dd046553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4518 5392 bytes
font_01_sfnt_off000057a5.bin
fd2f76b6b171cedc748dbfad98187b3c5526e247bc4fcc3b82dc05c2d92632d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A5 9772 bytes

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