Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7218e389604a207…

MALICIOUS

PDF

42.0 KB Created: 2020-08-01 13:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab8d5e3faeeb3ba284ec2de61bf63745 SHA-1: 2c987730b771b23113294d8b8c27ffcdeb25c1a6 SHA-256: e7218e389604a20771ecb65f85944d1ef2d550e2a3a30b68c905ed906dc792c2
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, which is presented as an 'fps counter unity'. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=fps+counter+unity
    • http://files.woonsocketschools.org/uploads/1/3/0/8/130813827/7668852.pdf
    • http://files.franksrockyhill.com/uploads/1/3/0/7/130740255/temudakexovuki_vugadilijozuz_koxifikizibu.pdf
    • http://files.fireecologyandbiodiversity.com/uploads/1/3/1/4/131406736/busudasede.pdf
    • http://files.lucreciadesignsllc.com/uploads/1/3/1/0/131069968/1574663.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/fadonuxonebubevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/tekoviwol.pdf
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/54222235266.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0888/files/vasilipexevokulizuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66491839223.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/liwevonedug.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/wozugijebulagebini.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/moto_g_3rd_generation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/giwozawizovunajatinilalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8017/1174/files/37134812598.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_off000064f5.bin
d11791eb9dc4f2d94e4a31a9cda21b40551d3fc65aee689b94d3ca914c69d9d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 4740 bytes
font_01_sfnt_off00007531.bin
0c862d85b31e8e119e7cc84f23edf914be0de707d31136d6c1de644d1dfe5218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7531 11836 bytes

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