Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5e36dfc665f0ee…

MALICIOUS

PDF

42.5 KB Created: 2020-08-31 02:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c4bae6ba4525ff11b9cbe7052d5da8 SHA-1: 1264332be5462999338163a68eb3d1d7eb77bb6a SHA-256: 2f5e36dfc665f0ee993537ec4d4002ab4ce0b7eac7cf10c9aa33e669ec7861f5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign but serve to obscure the malicious destination. The document body contains garbled text but includes the malicious URL, suggesting an attempt to lure users with a seemingly relevant keyword.

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/wix?keyword=game+dev+tycoon+guide+dystopian
    • https://static.usrfiles.com/ugd/b8c837_ebf31f846ee94fdeb68493c673654f17.pdf
    • https://static.usrfiles.com/ugd/47b1e8_0f09c6f4362b4cdab3dd4714ec881c52.pdf
    • https://static.usrfiles.com/ugd/0d9a50_6b17a296cec64b94bcee19ac02c8a622.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9231f1f13914edfaeb8b9dcc12db2a0.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/31114091040.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/corona_sdk_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/bodama.pdf
    • https://cdn.shopify.com/s/files/1/0437/8142/3262/files/bhu_bsc_agriculture_entrance_exam_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/hernias_da_parede_abdominal.pdf
    • https://static.usrfiles.com/ugd/6cfc61_ae75d1d5da2b4c69859b9d36e426dc7c.pdf
    • https://static.usrfiles.com/ugd/ac51ce_d01bf7f355524f6ca18372f8a8b3eea7.pdf
    • https://static.usrfiles.com/ugd/73f3b0_cf6648b696d14d83ad1e008c785c3f82.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_off00006674.bin
63388b961f68d838734ddfe8da8acb2d85dd21aa4198b3c99b1ed12678766eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6674 5456 bytes
font_01_sfnt_off00007914.bin
c41952cab75ea6b516cbf39be3c977be7cb45103cf7c2804b5ada4c9e33ff108		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7914 10600 bytes

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