Malicious PDF — malware analysis report

Static analysis result for SHA-256 3192741c76f1757a…

MALICIOUS

PDF

33.5 KB Created: 2020-08-29 04:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72245cc36104ff5d1b8e55949b3eb19c SHA-1: a275b58acc6f2490e5b0c66e59c638a957f1b677 SHA-256: 3192741c76f1757a0d4eba8499126fa69ff8babc0ebd8882ec1b886782992493
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'Festo pneumatic cylinder catalogue pdf'. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword to potentially disguise the malicious intent. The file also contains a large number of other PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination.

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=festo+pneumatic+cylinder+catalogue+pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/all_tamil_news_paper_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/lawaxanaramejagebuwanif.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/razor1911_skyrim_update.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/5264519759.pdf
    • https://static.usrfiles.com/ugd/b8c837_52597abc55f34ca2bb35434384356245.pdf
    • https://static.usrfiles.com/ugd/b8c837_030a6e9254f049b4be1a0ede90d0dbbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_75f2379b2b204ca4b35a4f382879b9ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc95bedce42d4344b6b2d70d41d7cb79.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6574de862bd4d0eb82da68d5e67e820.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/77459920402.pdf
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/siklus_hidup_cacing_kremi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7918/files/aakasha_ganga_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/jepoxojudis.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/xekuxagetofogafik.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_off000045c2.bin
5bc60d7449cab5f8f5230424a07423a706060f0a54c5e31ba10d0b86f321cfd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45C2 5532 bytes
font_01_sfnt_off00005883.bin
c2594dc0fab9a6abf57c20039c9562147f240ed9e145a8b0b691cd7f0cf58153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5883 9500 bytes

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