Malicious PDF — malware analysis report

Static analysis result for SHA-256 31c9bd1df858080a…

MALICIOUS

PDF

45.7 KB Created: 2020-09-09 12:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d076dae516c8d8ab58e6a32b19b1066 SHA-1: 2a796ddd296d023b238fbd771950da5c2b6b561d SHA-256: 31c9bd1df858080aeb148fd7ae624f4762a867a2d2e5ce7eee57f1aebbf90a83
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, disguised with a lure related to 'best whatsapp profile pic'. This indicates a phishing or social engineering attempt. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing directly supports this, and the presence of numerous external links suggests a link farm for SEO poisoning or distributing malicious content. No scripts were extracted, limiting the analysis of further stages.

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.link/wix?keyword=best+whatsapp+profile+pic
    • https://static.usrfiles.com/ugd/c81504_f6870fa6b96946c587036aba46d37165.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_6a6ea4d9af9d4cd0b788c438d05bd12e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a182443aa60d49d9aceba2fbf9fcfffd.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/97271454513.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/79860386209.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/49895599290.pdf
    • https://cdn.shopify.com/s/files/1/0465/2865/9614/files/nutubovepakerere.pdf
    • https://static.usrfiles.com/ugd/3d7af5_b7a4909c12394a62b6ab1dce2351ce91.pdf
    • https://static.usrfiles.com/ugd/5926b4_a276e65071bf465bb11f4e739eb6b903.pdf
    • https://cdn.shopify.com/s/files/1/0447/9208/6685/files/bncc_ciencias_naturais.pdf
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/vixefopujive.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_off00006016.bin
cb9b911b98574adbea41f1d465f8692a260065d420d7e1ccb6a97379fdfebe2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 5244 bytes
font_01_sfnt_off000071fe.bin
82a78a6c7d477b2dc6afea121f5034f3b2ec5b285be98242c8e74d16e4eac2a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FE 10148 bytes
font_02_sfnt_off000094a6.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A6 16312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.