Malicious PDF — malware analysis report

Static analysis result for SHA-256 4744b2acd43b3a57…

MALICIOUS

PDF

52.1 KB Created: 2020-05-20 20:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8286f110819e14874f4af706da734f45 SHA-1: b4c9370c13e91df58df3954a4ab3d5d1a8b50aa8 SHA-256: 4744b2acd43b3a57698bd7d9237899328eeb54faaf94028e88d01e1ce156a385
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution network for malicious content. The document body, though heavily obfuscated, also contains some of these URLs. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://1stmscouting.com/uploads/1/3/0/6/130639183/130639183.html#farewell+to+arms+pdf
    • http://muggenbestrijder.com/uploads/1/3/1/4/131408256/kekebuvaku.pdf
    • http://rousegifts.com/uploads/1/3/0/4/130475877/4cfb5.pdf
    • http://goldenhealingartsnm.com/uploads/1/3/1/8/131856052/f4efccd05.pdf
    • http://getkidsoffsugar.com/uploads/1/3/0/4/130488779/rabirepo.pdf
    • http://ntshonalanga.com/uploads/1/3/1/3/131398386/niteriwasofegerizapa.pdf
    • http://allincardhousesa.com/uploads/1/3/0/4/130478868/1711998.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000973d.bin
9f091b1df99470ab26f1a220869f8aefd7e9a64b2dee5e47b2cf50e640a722d0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x973D 26296 bytes
font_00_sfnt_off000068c5.bin
5f431aec6d1177ece3d5199f160d2cbf2ed94ce991cb32da44a3699bb201986c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C5 2048 bytes
font_01_sfnt_off000071a7.bin
9cee4b8ddb53337117a4f7cc024700f9787eb25ae8ba87d925489a965ebbe65a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A7 10916 bytes

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