Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d09f00e599f4ec…

MALICIOUS

PDF

45.1 KB Created: 2020-08-02 09:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5428115bc1f0725bc7125e3c7a2091c6 SHA-1: 949a88feef9c3ea86e66ae9316607111dabc9a70 SHA-256: 49d09f00e599f4ecc5202732a9c7d50b932ce5c12442be4fd7418a21b25bcd61
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to a finance textbook, suggesting a social engineering lure. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to host 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.com/pify?keyword=fundamentals+of+multinational+finance+moffett+pdf
    • http://files.stephenschumann.com/uploads/1/3/0/7/130739697/acba8b23dab9.pdf
    • http://files.acaringcommunity.com/uploads/1/3/0/7/130776655/vazapis_lasilev_gexasapujuf.pdf
    • http://files.kelly-johnston-art.com/uploads/1/3/1/4/131483097/1743449.pdf
    • http://files.lomlibrary.org/uploads/1/3/0/7/130776619/gafepirinetarumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3110/files/tubirugaxezojelon.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/51345759413.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/60417955863.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/xipilawejunikubegot.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/71485680551.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/vomet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/15989447499.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/denademojejebikejivoka.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1517/files/69241820426.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/99685190651.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/56318158168.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/78275733414.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_off0000729a.bin
fea4fe1a4260d469f9100016bdd42f2a4d10e81d63908631a9bccb26d0d117de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729A 5160 bytes
font_01_sfnt_off00008424.bin
99aebde7208ab37e4bc71bd290c145120e1e75b3abd8dcf6f68d47579a8ca437		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8424 10452 bytes

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