Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3a5c23c895fc30…

MALICIOUS

PDF

54.4 KB Created: 2020-08-29 17:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 604e1557da12ba6c51b0bae707cbfb66 SHA-1: f3c348c8443c04f571ae6ff68a20dc773a99a3b4 SHA-256: db3a5c23c895fc30efa553f2644b7c70491e9c7fbfff771c68db1997d9e4857f
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 'https://ttraff.me/wix?keyword=rapido+e+devagar+audiobook+download'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The presence of a link farm heuristic further indicates a malicious intent to distribute 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.me/wix?keyword=rapido+e+devagar+audiobook+download
    • https://static.usrfiles.com/ugd/b8c837_4adedca71c6249a7bcc29ecf813a5d93.pdf
    • https://static.usrfiles.com/ugd/b48b60_4c8bb92bba484b87bc1d4b264819b3a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_725639628d584dd48b143e5adc3fa149.pdf
    • https://static.usrfiles.com/ugd/b8c837_96fc0f23e4144a17826ac6aca3cbee9b.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/besurifapimujuxigijaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/mezovigibefineje.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/12474520080.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/95284750153.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/jejonogukixopeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/pasisifakar.pdf
    • https://cdn.shopify.com/s/files/1/0437/2827/3569/files/fovumejanewozuwonasix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5968/files/sezosawulalemorizibeliful.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_off0000966b.bin
4beffe564e09a2f1cd3336c7120b03905dd625ad5fbffa808291e042696aea95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x966B 5312 bytes
font_01_sfnt_off0000a8a7.bin
ef5d74033f47675da7c2ebd75fecd1546e500df3d74db8b8442632c445899c18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A7 10468 bytes

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