Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97a1ce0ff81a4cd…

MALICIOUS

PDF

76.9 KB Created: 2020-08-23 12:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f7e993ae545709b0e15e1fb4db80226 SHA-1: 26e6e9a058efcf985445551e8484eb0a86cd7a4c SHA-256: f97a1ce0ff81a4cd553b6c0d1784f7cdbdde98d7b29bb3cc33470ab232da605a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=whatsapp+for+nokia+asha+x2-+01'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The overall intent appears to be directing users to malicious infrastructure under the guise of a software download.

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=whatsapp+for+nokia+asha+x2-+01
    • http://files.pflagdetroit.org/uploads/1/3/2/7/132740814/9a60662.pdf
    • http://dapavagu.st-christophers-nh.org/uploads/1/3/1/6/131637814/718504.pdf
    • http://mosugo.malashahdesign.com/uploads/1/3/2/3/132302857/1da025fd26f60.pdf
    • http://files.newholocaustliterature.com/uploads/1/3/0/9/130969480/ff0a5f2.pdf
    • http://files.whatsupwithmath.com/uploads/1/3/2/7/132740399/e3f39b3c9f.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/49974894309.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/duganoveveri.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81274949660.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/xepiselim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/business_case_analysis_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/7644/4320/files/22347945671.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/76375140042.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9621/files/luferu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/cds_gk_syllabus.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_off0000e2e2.bin
f551cd0a5ab4a3fdca21407a6e62991b5dbfd4d287f6f70e6a4f78cb21cbaa5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E2 5128 bytes
font_01_sfnt_off0000f456.bin
96b05e66e65a38bffb8e54f2be7a058e449b58ca4fcaf3344199353dd96b46a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF456 10572 bytes
font_02_sfnt_off0001187f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1187F 4324 bytes

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