Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14f9a6deae1c344…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 09:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe6e76e0f977c398f141561fc2ac75b6 SHA-1: b6f7fa02def501392c8ad85afcb494c26c719431 SHA-256: d14f9a6deae1c344519c7fc7afa85b76516db8f0d0577a01d7ad181f9ae43834
160 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 file contains a large number of embedded links, many of which are designed to appear as legitimate documents hosted on platforms like Shopify. One of the primary links, however, redirects to a known malicious domain (ttraff.ru). The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document also attempts to trick the user into executing commands, likely to facilitate further malicious activity. No scripts were extracted from this sample.

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.ru/pify?keyword=examples+of+endospore+forming+bacteria
    • http://files.joanavillaverde.com/uploads/1/3/0/7/130739742/c2a8ee9a3.pdf
    • http://files.emilyreynoldsart.com/uploads/1/3/1/3/131383982/5840401.pdf
    • http://wurel.berlinsbestbeerfest.com/uploads/1/3/1/0/131070450/a13a6.pdf
    • http://files.wevalueourteachers.org/uploads/1/3/1/4/131438539/givux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/agile_project_management_handbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/gofetuleviliwupomarofab.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/padi_rescue_diver_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/deadlock_prevention_in_dbms.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/87468115048.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/66125043453.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/94993441687.pdf
    • https://cdn.shopify.com/s/files/1/0432/8456/2084/files/tugabelozisatajofa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6372/8545/files/lava_song_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/liworigofunozekedexifuku.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/popopaduxibiwox.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_off00007060.bin
5ed74f71e07059d6dd34cc5d5d2f2ec5cd2cd0c9cf693cad5c9aca31dd9d9cc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7060 5640 bytes
font_01_sfnt_off0000837f.bin
edb8de3c37440ddfafe9245313096c7a38e737fba4d3f4578648e3681caf1662
pdf-font-stream PDF embedded font (sfnt) at offset 0x837F 10460 bytes