Malicious PDF — malware analysis report

Static analysis result for SHA-256 29caa65bfac0a6a9…

MALICIOUS

PDF

66.1 KB Created: 2020-08-21 16:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fa5068387cc714a4c7ac308568cf2f6 SHA-1: 3585cf9197821e4e5243d619a4ac3ffc50a8da35 SHA-256: 29caa65bfac0a6a9d023c5a0febdb1d8bd4a3070dfd33fc0027b4f9947e1ca9b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to deliver a second-stage payload. The document also impersonates a cloud document service and instructs the user to copy/paste content, suggesting a social engineering lure to trick the user into executing malicious commands or visiting harmful links. The presence of a link farm further indicates an attempt to game search engine results for malicious distribution.

Heuristics 6

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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=android+sdk+emulator+for+pc+free
    • http://files.allergicandyummy.com/uploads/1/3/0/7/130739140/danozudozas_wiwutemute_safini.pdf
    • http://zimorod.fagelnsblick.com/uploads/1/3/0/8/130814328/fibezamimefabavu.pdf
    • http://files.jaxbodyshop.com/uploads/1/3/0/7/130776445/292219.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/tebidudewamajamewaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/xeronememideviruzalarede.pdf
    • https://cdn.shopify.com/s/files/1/0430/7461/7511/files/xenosibuse.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/tizemezeledajufelu.pdf
    • https://cdn.shopify.com/s/files/1/0460/9723/6132/files/past_continuous_tense_examples_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/4986947348.pdf
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/45302646869.pdf
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/problematika_pendidikan_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/32738944558.pdf
    • https://cdn.shopify.com/s/files/1/0435/5194/8963/files/7842787169.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/tolokotikaw.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_off0000b8a6.bin
eca1ae6770c699c9472e111ce5abbb8d253c78d21d4491c351d3f514474c9e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A6 5356 bytes
font_01_sfnt_off0000cac0.bin
49987dfc828a8d3d437dc7a3c04d6f7c9c282bdc1d517dacf0fa522254fcdd8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC0 15736 bytes

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