Malicious PDF — malware analysis report

Static analysis result for SHA-256 c317d9e92bfc1715…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 07:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c769f153fe563e7aec378ff0ed91e97 SHA-1: 70324a0cccd7cff9bd2d866f13c1a06283a4f349 SHA-256: c317d9e92bfc17156ccbf603f3805379c87bf8dbdcf609ceeee0babad0e5d226
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and text suggesting a lure for a 'Google sheet app for iPhone'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on shopify.com, likely to improve search engine ranking for malicious content. The primary malicious URL is 'https://ttraff.cc/pify?keyword=google+sheet+app+for+iphone', which is designed to redirect users to potentially harmful 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.cc/pify?keyword=google+sheet+app+for+iphone
    • http://murewuve.umc-tec.org/uploads/1/3/0/7/130739553/40ed20.pdf
    • http://wodobinab.birdandblossom.com.au/uploads/1/3/1/8/131857120/bowajodo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2679/2093/files/vufobegafare.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/developer_tab_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/pefejidosanorali.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/34243637637.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/foxuvemonetewolebu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/4391769086.pdf
    • https://cdn.shopify.com/s/files/1/0435/5886/2997/files/a_study_guide_901.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006508.bin
df92c5195a52616921f4455bcfada83dfb8babd47a886dbfde75f54b84b28bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6508 4984 bytes
font_01_sfnt_off000075f9.bin
9ab65bb461c3ef82fd10b3528d989a065f77728526b6bce7cf6b13d8f05e1cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F9 10156 bytes
font_02_sfnt_off000098a2.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98A2 4324 bytes

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