Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89977eec3cf759e…

MALICIOUS

PDF

55.6 KB Created: 2020-09-01 22:50:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e0bf670a7f81e8a71b03204252b753 SHA-1: 75d31c004882f4a07f75fbc5d623677616466840 SHA-256: c89977eec3cf759efbb4ab0f093212c079b77a7811afba4a503edf197b03b666
120 Risk Score

Malware Insights

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

This PDF document contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=link+outlook+calendar+to+android+phone'. The document body, though heavily obfuscated, also contains this URL and other links, suggesting a lure to a malicious site. The presence of a PDF link farm further indicates an attempt to distribute malicious content or traffic. The primary attack pattern is social engineering via a deceptive link.

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=link+outlook+calendar+to+android+phone
    • https://static.usrfiles.com/ugd/384ea4_3a0e6ca473b144ba901f5483d2180724.pdf
    • https://static.usrfiles.com/ugd/b8c837_8012811e613d4442b9bae7f5fa8b8c84.pdf
    • https://static.usrfiles.com/ugd/594ae5_107c41a74d034dd09b9fb4e041e22a24.pdf
    • https://static.usrfiles.com/ugd/5ecadc_4bc92536f91d49db98bcf7a16be927e3.pdf
    • https://static.usrfiles.com/ugd/d55797_a5de4a3053204335ae16ea50f6aca6e1.pdf
    • https://static.usrfiles.com/ugd/8e1900_4a6a57738cab4cad82a01405c364f537.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba72726db6d242e382f4f23ff7a5cbe3.pdf
    • https://static.usrfiles.com/ugd/5be868_5c0be275182e42a8bf4edcceab5c2d20.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/xexuzalukolaxawa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/alginato_de_plata.pdf
    • https://static.usrfiles.com/ugd/21e6f2_b1eb1264cf664ab1addde13310b3329b.pdf
    • https://static.usrfiles.com/ugd/b11f6d_90c625dd37fd49be8166fa613f525bbd.pdf
    • https://static.usrfiles.com/ugd/f459ea_d3c7ea80e4c54a48baf9b2cb57548c99.pdf
    • https://static.usrfiles.com/ugd/0d9a50_32533b6d3eb14594b054b2705e9a3c34.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_off00009d7e.bin
646f0efbd7b0d4c1d9853d9b96d491e743e8c2935d94beb1424d359a0051b2a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D7E 4988 bytes
font_01_sfnt_off0000ae71.bin
d4fce9361975a5c1544cfd2e94905cfedf7065bd94fc0ff338fbf7dfc9cb963b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE71 10244 bytes

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