Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6efe3dddf067d39…

MALICIOUS

PDF

45.5 KB Created: 2020-08-29 23:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64017faca85346a80f03135701d45ee8 SHA-1: 55296d7d2ad9cc7ad2c1b5141f3fdc62c6ae8eae SHA-256: b6efe3dddf067d39ab21569df5bbc13cb2f59b7c94e76e50ce2547a903f8e916
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This URL is embedded within the document body, suggesting a social engineering lure. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to static.usrfiles.com, likely to improve search engine ranking for the lure. No scripts were extracted from this sample.

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.com/wix?keyword=tolstoy+death+of+ivan+ilyich+pdf
    • https://static.usrfiles.com/ugd/b8c837_d889520d68334d968f4b813a1fe3d761.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97a4c2bb7ae48c3aba4fe4fdf46d109.pdf
    • https://static.usrfiles.com/ugd/c6ac46_bc2333aaa2f840c293024bbb43fc4872.pdf
    • https://static.usrfiles.com/ugd/b8c837_3390932eac314a89a94b0114d64dabeb.pdf
    • https://static.usrfiles.com/ugd/a18aa6_c933104be6014b358b9ee848ad6e8fb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0f034a21b39484ca9803036e72f6feb.pdf
    • https://static.usrfiles.com/ugd/b8c837_6aae4917859e4932aac2d8b100caaea6.pdf
    • https://static.usrfiles.com/ugd/3fc21f_6c9998a357aa45c9a07388486318e8b3.pdf
    • https://static.usrfiles.com/ugd/50c35f_55ef0e664ed643bbb0fe34be5859d19e.pdf
    • https://static.usrfiles.com/ugd/865d50_ae422fe3818a4746a9031038db467b8b.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5196/files/aeroplane_parakuthu_paar_hd_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9328/files/30018534130.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/gureruxizuxo.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_off00006106.bin
a7168f2223aa6e5ea46a57ee6387f24f6908db175e5a6c4a370946255e173dec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6106 4148 bytes
font_01_sfnt_off00006fa1.bin
c49d9d455e40cda0ba6a195d9a64d2fcbb9e7386db42e3a435550e4a596a39f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA1 5260 bytes
font_02_sfnt_off0000818e.bin
1c5d6bade0c68f1fb150a8e7a67f130f0ee7f7c31ae66f24d0eb4f1a97aae741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x818E 14024 bytes

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