Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8b5841df2c0068…

MALICIOUS

PDF

36.6 KB Created: 2020-09-01 23:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45a5d717f10d1eb809bfdfb85702157b SHA-1: f6daca732cdf041d415fcd6237b911c5fea59e6c SHA-256: 7e8b5841df2c0068ec7a5a6cc0c20f6681120dde9c28c00b1f7bbb7eb2e7c9fb
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 external PDF files. One of these links, 'https://ttraff.me/pify?keyword=game+tekken+android+terbaru', is identified as a malicious redirector. The document body contains garbled text but includes the same URL, suggesting a lure to entice users to click on the malicious link. The presence of a link farm and a malicious redirector indicates a phishing or redirection attack.

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.me/pify?keyword=game+tekken+android+terbaru
    • https://cdn.shopify.com/s/files/1/0436/1335/6194/files/43651354227.pdf
    • https://cdn.shopify.com/s/files/1/0432/8810/1030/files/time_value_of_money.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/baby_shark_video.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_463849bc6be7433e852fc612ca8eea3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b90e7a7ae6534294a2c8571233331a37.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_8c3255006cbd40d9adbc14d28f68ccd5.pdf
    • https://static.usrfiles.com/ugd/e73fea_eed26f8e932e487dabcacfc3115a9e0a.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_fa540549f6ef432089b87c939a7bee6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c687637e74f74d27a788dbd22bed4b5b.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/jugazigewojanurepejufe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7827/0619/files/40005780389.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_off0000515d.bin
12d6e8d2348354b1bee7cb652349540cb94798251147a7aaf18b85dda78242bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x515D 4996 bytes
font_01_sfnt_off00006246.bin
82f3dc6334bd00782925c2b29418b8a300abf7a81700ad8d30b2136e47165f86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 10420 bytes

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