Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e31475686ff2c5…

MALICIOUS

PDF

49.6 KB Created: 2020-08-05 23:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8817e09c40de3e1e080d2a31d0f3bd3 SHA-1: 40adc189a219fa1d810fc73ceae2cea3587ab4cd SHA-256: 36e31475686ff2c5a1372659e74cc2ea9309508dbde6869f9e7c4b443d69c86c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a malicious redirector link to ttraff.com, which is part of a link farm strategy. It also includes a lure to copy/paste content into a command-line context, indicating an attempt to trick the user into executing commands. The document body itself is heavily obfuscated and appears to contain embedded URLs, further supporting the malicious intent.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.com/pify?keyword=caricature+tutorial+pdf
    • http://files.agileleantransformation.com/uploads/1/3/1/4/131453015/6faadffa6fa35.pdf
    • http://files.alpinerec.org/uploads/1/3/1/4/131407901/bubetapuzat.pdf
    • http://files.merrifieldseminar.com/uploads/1/3/2/7/132710655/7749287.pdf
    • http://files.doublekboutiquellc.com/uploads/1/3/1/4/131438155/newixirodeson_zesababimajik_duwedidisumuga.pdf
    • http://files.gunnersquillshedgehogs.com/uploads/1/3/1/4/131407552/3d79071f4d.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/paxosexutede.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/82752421953.pdf
    • https://cdn.shopify.com/s/files/1/0435/6171/3813/files/toro_ccr_3650_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7220/9574/files/donav.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/free_form_builder.pdf
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/cbse_class_12_accountancy_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/4451284977.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/nitojaroba.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/gaxajitinumeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/stein_complex_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3915/files/fotipudivonesobawuje.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/kodinijetixilajipadalefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/zowenixuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/bawafalurizaje.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_off00008573.bin
17efab3aeb8f43b862e6175af379572f24a4786988cb53f1fd5a626e88d19788
pdf-font-stream PDF embedded font (sfnt) at offset 0x8573 4876 bytes
font_01_sfnt_off00009616.bin
5cafc0bb26dadd51ea894adb2c19b692c60272d5d900c21c67f3b416291bf114
pdf-font-stream PDF embedded font (sfnt) at offset 0x9616 10344 bytes