Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c6a63c2d2d169d…

MALICIOUS

PDF

31.7 KB Created: 2020-09-09 03:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e75104c22908b7a7087572edbde7f53 SHA-1: 3cc1b9a780e70d648e61df226d1b366caa03d2f9 SHA-256: 42c6a63c2d2d169d722a13888ee1dc4a2bca7045dec2800a8ca6e1da7536087b
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, specifically pointing to 'ttraff.me'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.me/wix?keyword=best+bgm+music+in+tamil+free', which is likely the initial lure. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a social engineering attempt to direct users to malicious content.

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=best+bgm+music+in+tamil+free
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xagene.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/63712623241.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/fallout_4_screw_id.pdf
    • https://static.usrfiles.com/ugd/312e0e_bd9f311fb89b4a56a74a23bb87e69554.pdf
    • https://static.usrfiles.com/ugd/25c42e_bf6d7f77273a4cc898eb2b0396b34dbb.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_c64591fe6605465183797b87fe0a440b.pdf
    • https://static.usrfiles.com/ugd/b8c837_14d2ad49b4374aca9468dc11e86e9712.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4509/files/fudafusexukatorifob.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/ssc_stenographer_previous_year_paper_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/cambridge_english_fce_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3313/files/historia_da_diabetes_mellitus.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_off00003f7b.bin
5bb26258865bf4cee065d4e45f55efcb844409215976728e2da510a4ce974828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F7B 5388 bytes
font_01_sfnt_off000051c3.bin
1dc98bcf7d7d7faad73cd164d76fe8831a6bdccadc7fe6291c083ad1bcfccba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51C3 9600 bytes

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