Malicious PDF — malware analysis report

Static analysis result for SHA-256 559535228332743b…

MALICIOUS

PDF

51.5 KB Created: 2020-07-30 08:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41ce9cb87bd65b2bb001179f23dfa1ba SHA-1: 4b55fa241a0eea5a9abd13550e124e094987c00d SHA-256: 559535228332743b8bf57a4b720723419f997b97b15c9aa3a7520d7d37c845cc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, which is presented to the user as a free German-French dictionary. The primary malicious URL identified is ttraff.cc, which is known to host redirector infrastructure. The file also contains a large number of embedded URLs, suggesting a link farm for SEO manipulation, further indicating a malicious intent to drive traffic to potentially harmful sites.

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.cc/pify?keyword=telecharger+dictionnaire+allemand+fran%25C3%25A7ais+pdf+gratuit
    • http://files.ancestral-pathways.com/uploads/1/3/2/7/132712139/ragusajapugi.pdf
    • http://files.ersamlab.com/uploads/1/3/2/8/132816087/kafedoverirewab.pdf
    • http://files.viewfromtheoutfield.com/uploads/1/3/2/6/132682040/botomezetil-wevodupiferiso-jixis-zinuzusilovuj.pdf
    • http://files.triplexfm.co.nz/uploads/1/3/1/4/131454883/b3bf577e62c.pdf
    • http://files.vivaluxx.com/uploads/1/3/1/8/131871952/kimokigus.pdf
    • http://files.viewfromtheoutfield
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/79195209330.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/11523263650.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/46745347328.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/32741766189.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/34822660745.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/6102300360.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/gulumonebunowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/nelixisiximudobuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/genexirod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdf
    • https://cdn.shopify.com/s/files/1/0437/5638/8510/files/totixagajewavobipi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/67032833667.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_off0000848a.bin
e01b256dad122ef2cea13555ec8d887bdd593c75fb55fc14251421946c6e3319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848A 5580 bytes
font_01_sfnt_off0000970b.bin
edb98805a289631e3800b4c8639f4c1cd8089fd4051dc5e61cdc0d2356401c70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970B 12256 bytes

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