Malicious PDF — malware analysis report

Static analysis result for SHA-256 d078188087a081fa…

MALICIOUS

PDF

40.6 KB Created: 2020-09-08 15:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 521e91732e1a4316c5a5ae15ee9ff690 SHA-1: 0a7ed0da98ea1d1619aaa6f52cec2498ff536a22 SHA-256: d078188087a081faf5e01ae4f691ac0e41f029e0c774b1296ed696761992c7b4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=backflip+madness+apk+free'. This URL is presented within the document body, suggesting a lure to download an application. The file also contains a large number of embedded links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL, which likely leads to malware distribution.

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/wix?keyword=backflip+madness+apk+free
    • https://cdn.shopify.com/s/files/1/0464/6676/0856/files/23113669900.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/spanish_music_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/jisugewovolokowodomasara.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/bioplastik_kulit_pisang.pdf
    • https://static.usrfiles.com/ugd/4d548e_81f967619b234fedb7b6265b60048da5.pdf
    • https://static.usrfiles.com/ugd/268ab1_6c00e8198257465abc7475bfa81d57d1.pdf
    • https://static.usrfiles.com/ugd/07625c_dba5746b9ded43e29e41a2fc791ed89a.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/podupojogotor.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/dosavosoxogenuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3457/3991/files/21022868927.pdf
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/14965306912.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/html_codes_file.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_off00005bcc.bin
ad99847b20303b1496f449db59fd2fc19fa3fcb5526d7e2d31942c0e926acc6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCC 5416 bytes
font_01_sfnt_off00006e28.bin
906f423436ce4a2a2f4e103e08653b616c1b31e7c1cbbc386595698c4eb13d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E28 12348 bytes

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