Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f408ad1220d92ff…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 06:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c22efee12e7b37a05720fffdfbb5cf76 SHA-1: 8ebf4a15a20efc5aad68e56a24c9c826bd3c0906 SHA-256: 9f408ad1220d92ff1d1b0bde1b084c5d618299c05d3e053e932446320710e4ad
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with a seemingly innocuous keyword. This indicates a phishing or redirection attempt. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bharatanatyam+classical+dance+songs+free
    • http://files.rezinnitelegends.com/uploads/1/3/1/4/131453022/lipofij-tizufi-tikimuzegawifi-bakepuru.pdf
    • http://dowove.benefactoryllc.com/uploads/1/3/1/1/131164250/gisilizov.pdf
    • http://venazipum.jobarber.com/uploads/1/3/0/7/130775634/f145f.pdf
    • http://files.deepcreektubes.com/uploads/1/3/1/8/131858592/ce04cf9a9e9.pdf
    • http://files.allprinterrepairsperth.com.au/uploads/1/3/0/7/130775603/niwukujorovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/zkteco_attendance_management_software_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/57393560526.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/76443900785.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/sulanidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2678/files/77579257911.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/dhol_baje_re_gamit_song.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/
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b3.bin
d2b11700c0e0ee6e2a3a0c642af7137f483859f248f3ca43553547e6154f89dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5584 bytes
font_01_sfnt_off00007584.bin
26787459edf669d1e821cbfecf59bb1d8cf5cf68b1ef6669e9aa5702a7a9f9cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7584 14876 bytes

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