Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fcabada5db959c…

MALICIOUS

PDF

51.5 KB Created: 2020-08-31 03:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae8026dd823eda5686f0fd7b147c3b76 SHA-1: 00ba520b789cc4b7c9623e7cf97e126acebe7b75 SHA-256: c9fcabada5db959c038b14733617fb879e9ed643eb66b4bb4ced8ba56596dca7
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as a link farm for various PDF documents. One of these links, https://ttraff.cc/wix?keyword=best+ranged+accessories+terraria, points to a known malicious redirector. The document's structure and the presence of a malicious redirector strongly suggest a phishing or social engineering attack aimed at directing users to malicious content.

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.cc/wix?keyword=best+ranged+accessories+terraria
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/9413314757.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/94705204291.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/warhammer_40k_genestealer_cult_codex.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/rujalojugamagatamevi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6488/files/asia_map_physical.pdf
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/importancia_da_alimentao_saudavel_na_escola.pdf
    • https://cdn.shopify.com/s/files/1/0438/2821/5968/files/aminoacidos_de_cadena_ramificada_deporte.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/16062727522.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/retijub.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/gagul.pdf
    • https://static.usrfiles.com/ugd/74e905_2832ba387e6945f0bfce50c632de4657.pdf
    • https://static.usrfiles.com/ugd/0baf77_f330cea7a74d4cc5b6781904a7f649f9.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38140624907.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/61195011363.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/domibawumofolugez.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/572218089.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/historia_de_brujas_belgica.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_off00007ec7.bin
c2709feec3bda998a80a8b531c847afa10aec911726bdb0f59d8957f1de2afd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC7 4912 bytes
font_01_sfnt_off00008f7d.bin
16fbcaffbe3d5f4f3ef6f17148cd2ea3d9d9f8fd6d8299cb744b39b53b1ac833
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7D 10584 bytes
font_02_sfnt_off0000b2d1.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D1 4324 bytes