Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbcce2175ab6fc49…

MALICIOUS

PDF

65.2 KB Created: 2020-07-27 16:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e736e30cc22494d10a14ea3fb31246d1 SHA-1: 4b2d1c910cff193de2f7a01a11bad2c8dda82c6f SHA-256: bbcce2175ab6fc49f5318c891304653f936f4766095671f5cd424ce7b45f98e6
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content widely. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to interact with command-line tools, likely to execute further malicious actions. The presence of a visual download button lure reinforces the deceptive nature of the document.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=nitgen+access+manager+software
    • http://files.americainwonderland.com/uploads/1/3/1/4/131438419/17c67cf0de3c486.pdf
    • http://files.thehardyrealestategroup.com/uploads/1/3/0/7/130740589/lafidofiwinajez.pdf
    • http://files.macshistory.com/uploads/1/3/1/6/131606563/35a33bf69.pdf
    • http://files.kmagalski.com/uploads/1/3/2/7/132740285/9911105.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/zowojuleli.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/nurirebemovorakure.pdf
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/81367863757.pdf
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/58677711586.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/dirafelotabutojonudowomej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/vewubunik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/koguralidemabizafufu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/doriwego.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/nupazugebugepazukizeli.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/74725256616.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/39472875566.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/68608802941.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/gigevekiruvosusolivav.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/75175722876.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac1d.bin
a5291b0622fba246b5373b3187d4631318dc6574e28679b3ac665766808db63f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC1D 1996 bytes
font_01_sfnt_off0000b566.bin
bd03c3a7e2639bb091cc82074d3beda5b4909b448bd07ca36d1a2b12256358ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB566 2940 bytes
font_02_sfnt_off0000bfe5.bin
40f6f1b0104e8cb252a2ca8e289ff510bf072c02cc4cc06320710d4cfa79c228		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE5 5020 bytes
font_03_sfnt_off0000d0ec.bin
09ea01305b2695d14d41539065ee578131f4191a11b6ae85930d490985fbcb32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EC 11028 bytes

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