Malicious PDF — malware analysis report

Static analysis result for SHA-256 460c3f0ffea84baf…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 15:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fe3ce574084ee565f5b0f5d16f20ed3 SHA-1: bd5f6409197b7101c8e2e623df92e83975609e58 SHA-256: 460c3f0ffea84baf35d2ff7ec723578f3a6472026eddec2483ac1088912f2dd5
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, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL identified is 'https://ttraff.ru/wix?keyword=crystal+part+2+walkthrough', which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and appears to be a lure for users to click on the links.

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=crystal+part+2+walkthrough
    • https://cdn.shopify.com/s/files/1/0431/8016/3229/files/kuzox.pdf
    • https://cdn.shopify.com/s/files/1/0438/2497/1936/files/71164877846.pdf
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/linus.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/51769000833.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/95744605175.pdf
    • https://static.usrfiles.com/ugd/7f929b_5c1f2ee61d034d53a3fc09da87247d7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cf5d56a661243fba9817a90c2b050e1.pdf
    • https://static.usrfiles.com/ugd/f3cb45_cc601f5646784bc39095f54de0a7adce.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc29d997332d4c2399494376c25d3128.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/duzarasogevur.pdf
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/bombastic_brothers_mod_apk_free_shopping.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/lol_morgana_support_guide_german.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/23612894980.pdf
    • https://cdn.shopify.com/s/files/1/0464/9018/9976/files/mafisom.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/noxedenotesusi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/rarederoje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007378.bin
55f3e8282655228c9ad7f44775681a5de99975354a7930a94b910cd1a85b065d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7378 5104 bytes
font_01_sfnt_off00008502.bin
8856f4cd6c8f1c0013c16af89d85def4317b0821c43d4a5db22bbfb385afc276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8502 9996 bytes
font_02_sfnt_off0000a726.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA726 4324 bytes

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