Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77f871a3b26698d…

MALICIOUS

PDF

50.0 KB Created: 2020-08-04 09:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51f4d04b26e7d9c0b549165e5db995da SHA-1: d42a333383ec7d81ea8c8450dd907d05c71db516 SHA-256: c77f871a3b26698db4a65119875270a25bf2a800dc3be7ba7a6a4464e3875cfd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link 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. The PDF also exhibits characteristics of a link farm, with numerous external links to other PDFs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=beaucoup+de+bruit+pour+rien+william+shakespeare+pdf', which is designed to lure users into clicking it under the guise of a Shakespeare PDF.

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=beaucoup+de+bruit+pour+rien+william+shakespeare+pdf
    • http://jivolizo.sosquaredaway.com/uploads/1/3/0/8/130814229/b957efb.pdf
    • http://files.eclecticcontent.com/uploads/1/3/0/8/130813762/5797223.pdf
    • http://files.5puntocero.net/uploads/1/3/1/8/131856770/d4f2bdc607ba.pdf
    • http://files.rothparkfamilycamping.com/uploads/1/3/0/7/130740458/junuroditomewipiw.pdf
    • http://files.trfike.com/uploads/1/3/0/7/130776204/9198506.pdf
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/daxarolalow.pdf
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/puzafoxulokedidomenapok.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5196/files/mercruiser_350_mag_mpi_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3209/2573/files/njit_math_common_exams.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/xofirurobuzijakekonibilod.pdf
    • https://cdn.shopify.com/s/files/1/0430/4896/0151/files/wazadalidufot.pdf
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/zitanodubedukejimowodax.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5288/files/54462212139.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/30342207526.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/tokutujuvato.pdf
    • https://cdn.shopify.com/s/files/1/0431/2648/9249/files/27175063966.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/dark_souls_board_game_aggro_token.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.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_off00008034.bin
5bace890b2c14596bc2b6d1ac33797fbfdb11bf52896f2c9aff0fb8b3419343a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 5740 bytes
font_01_sfnt_off000093a1.bin
178b470b6e696fd9bba963911ac63745924891d221bcb35b9c6b9d5ab324d554
pdf-font-stream PDF embedded font (sfnt) at offset 0x93A1 12176 bytes