Malicious PDF — malware analysis report

Static analysis result for SHA-256 e369a7ce5629cf53…

MALICIOUS

PDF

37.6 KB Created: 2020-08-30 05:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ccba53a707df83bf12f0a797e6a5127 SHA-1: 6d972effc0d57783d7285814710681def9aa5621 SHA-256: e369a7ce5629cf53b0ad120af42dafcbaf3c85f2d20635d2eca579372e278ea8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, indicating the primary 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=balarama+malayalam+stories
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/diniga.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/42936551248.pdf
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/95663993866.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/hardy_sandhu_all_mp3_song.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b7a91b97f0c4a7d9264f30e82a35a38.pdf
    • https://static.usrfiles.com/ugd/1b8612_7e0511b7d5dd440b867823336b93cf93.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/nevusij.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/16372934007.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/docker_for_windows_10_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/11228316064.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/kotajipovadop.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/vakijago.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pelezegagujagemubejapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0756/6239/files/fixedo.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_off0000565e.bin
fd95ee91d7194ed82b3dccf6e6ab86a6d6e1b3ee41a9ab8a093b696af8d31a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565E 4984 bytes
font_01_sfnt_off00006739.bin
e09778321b472db3ac67cbd606824263054404345dc4453e972992bbba5b3e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6739 10156 bytes

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