Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cbcbe9938ee19f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 04:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06feaa4770ad7d28ba48fde69e5ee2be SHA-1: 3441af89319793bd3ac31c3a95992f648a47ef5e SHA-256: b2cbcbe9938ee19f149f60db3f6c5b39d600cf9e4ef519176301527f7589d9d6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body itself is largely obfuscated but contains the target URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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.ru/pify?keyword=cuento+caperucita+roja+en+ingles+pdf
    • http://files.pippayoga.co.uk/uploads/1/3/1/4/131453177/sotasevev.pdf
    • http://files.prakrutischool.in/uploads/1/3/1/3/131380845/luboxelenabus-likoxiworo.pdf
    • http://files.sweetbabiesdayhome.com/uploads/1/3/2/7/132740320/zipud_wenuv_soraminudej.pdf
    • http://files.familiarstrangers.info/uploads/1/3/0/7/130775707/fipaka-feworidewerot-jojaguzufenan-nuloropetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/vukitupa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/nivaruxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/99667957064.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/sorted_set_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/tony_stark_mansion.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/98005503487.pdf
    • https://cdn.shopify.com/s/files/1/0436/6378/6137/files/blest_be_the_tie_that_binds_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/6430984091.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/chess_knight_movement.pdf
    • https://cdn.shopify.com/s/files/1/0433/6920/1832/files/vovimowalip.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/anxiety_disorder_questionnaire.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_off00005cd8.bin
b6b0996e48e48330447b203f78da9199f4558535f1a15ac06822d2779bb8eef2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD8 5304 bytes
font_01_sfnt_off00006ef5.bin
a682e89fa8b7f2652ee804e2846d5a5f674014ef92402c6af0b2e8e39a6618f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF5 11048 bytes
font_02_sfnt_off000092e3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x92E3 4324 bytes