Malicious PDF — malware analysis report

Static analysis result for SHA-256 b87c5befe785301b…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 05:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 865415c858fe31520fc6403a117471d9 SHA-1: 79c06c3f7b56c6212039cbb66783578eefcd33e5 SHA-256: b87c5befe785301b5b39607cf6090632ca51a3c775cdb20d6c7be6dc47145ba9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body contains text related to a hand and wrist articulation PDF, likely a lure to encourage clicks on the embedded malicious link.

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=articulacion+de+la+mano+y+mu%25C3%25B1eca+pdf
    • http://xovajexa.appgeogconf.org/uploads/1/3/1/3/131384260/jomegakuv-fizugubedewujax-xikiladebot-taxoxojida.pdf
    • http://pexotem.bookswagbag.net/uploads/1/3/0/7/130739811/3831111.pdf
    • http://files.savejonesstateforest.com/uploads/1/3/1/8/131856392/2322414.pdf
    • http://files.myvaniscoolerthanme.com/uploads/1/3/1/4/131483265/zefomefewomojuve.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/alter_ego_4_plus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/kurunib.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/mujogibobowofewos.pdf
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/allahabad_high_court_review_officer_previous_year_paper.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/51155581175.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/nabojidamaxekuwizamisira.pdf
    • https://cdn.shopify.com/s/files/1/0463/0822/9280/files/comment_joindre_2_ensemble.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/pencil_shading_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/50141325996.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_off000058b9.bin
0501be7a5f72b981081ae625ca6a3f5c16fd5bec582c05f6c76275128e0d6fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58B9 5428 bytes
font_01_sfnt_off00006adb.bin
4ad037b1052852f3b3ae249a89ea0f64e9fa6c9ffe43df511567bbe3f9badf3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADB 11304 bytes

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