Malicious PDF — malware analysis report

Static analysis result for SHA-256 44bc94e1416dab09…

MALICIOUS

PDF

51.9 KB Created: 2020-08-01 23:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d3fe64a057cfdafad6860af8970d68 SHA-1: 0348219f179b6212ded6620b804df754b9820870 SHA-256: 44bc94e1416dab09f9e4fc05b6f78df5400e58639ce44f44f670db2e7f519118
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=sort+dictionary+python'. Additionally, it exhibits a PDF link farm heuristic with numerous links hosted on cdn.shopify.com, including 'https://cdn.shopify.com/s/files/1/0438/1143/8752/files/taresiviruwaxewubawi.pdf'. A high-severity heuristic indicates the document body instructs the user to copy or paste content into a shell, suggesting a command execution lure. The embedded URLs and the lure indicate the document is designed to trick the user into executing malicious commands, likely to download and run a second-stage payload.

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=sort+dictionary+python
    • http://files.oasishospitalphysiotherapy.org/uploads/1/3/1/4/131437242/6808391.pdf
    • http://files.simplejoecafe.us/uploads/1/3/1/6/131607662/4350135.pdf
    • http://files.pitch2script.com/uploads/1/3/0/9/130969855/tijitanu.pdf
    • http://files.bravemansuitingco.com/uploads/1/3/0/7/130776263/nolinu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/taresiviruwaxewubawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/wibesasonetolen.pdf
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/disav.pdf
    • https://cdn.shopify.com/s/files/1/0437/2335/8358/files/37598432581.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/seweripurelepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/mumexurizokidesodivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/8550320882.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6503/files/fe_civil_review_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/35013970767.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/52726752488.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8218/files/xifawozusujop.pdf
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/16391388721.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/99409906411.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_off00006783.bin
105653034d567519ce3f23635554d9769e5d6cd63d04f88827cd08b94400677c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6783 4828 bytes
font_01_sfnt_off000077d6.bin
5d877453b06d1d306be2c9e955ebf8f7b6c2157169561c0871fd702802da5acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 10504 bytes
font_02_sfnt_off00009c08.bin
e37c443e4422a9e953eb8fcd11dfa6360565e839dee4ffaa628fb8838c35acb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C08 16620 bytes
font_03_sfnt_off0000b2a9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A9 4324 bytes

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