Malicious PDF — malware analysis report

Static analysis result for SHA-256 e492a9f78a60b45f…

MALICIOUS

PDF

36.2 KB Created: 2020-08-11 17:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ba9e1fa1cd268680d7ed32dc43b3bc3 SHA-1: ece544a0db09b39354edf2f005c7f581fb28660e SHA-256: e492a9f78a60b45fd9ade222195ecb2bd03edbf8846c94898286dfdd75691420
120 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, many of which point to Shopify domains but are likely part of a link farm designed to improve SEO for malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=al+quran+tanpa+terjemahan+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious infrastructure.

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.ru/pify?keyword=al+quran+tanpa+terjemahan+pdf
    • http://files.islandbeautyportland.com/uploads/1/3/1/6/131637016/segalikefit_faresodewo.pdf
    • http://mazopogu.calvarylutherancs.org/uploads/1/3/1/4/131483281/9130682.pdf
    • http://files.multifaithstorytelling.org/uploads/1/3/1/4/131406344/tevefoku.pdf
    • http://files.chrisbracebuilders.com/uploads/1/3/1/6/131637546/jitikobalow.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/channels_of_communication.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/economy_minecraft_servers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/3741182710.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7387/files/rizukexoroter.pdf
    • https://cdn.shopify.com/s/files/1/0447/2664/8985/files/computer_systems_warford_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/68274148787.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/perfect_english_speaking_course_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/17521357567.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/mobafulas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/rofubobitin.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_off00005072.bin
d5ddd6f7a163bc3ffdbae4278af6fb9627adb45f61c81891a0d9e6fa14466c03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5072 5296 bytes
font_01_sfnt_off0000624e.bin
10185d5f213b8651349a80097665a134890ac59f3a96bd0dfaf9eef3d408f48e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624E 9888 bytes

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