Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e261ffd781dc4d…

MALICIOUS

PDF

108.5 KB Created: 2020-04-03 01:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8d0864f5ef57df281b9693fd1c246768 SHA-1: 46e25c4acbf55cba7d872be3fb60b35bdcbbea78 SHA-256: 37e261ffd781dc4d999047611420a57917e9dd9fc3c68dcfdc93c36376dbc28e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to manipulate search engine results or distribute malware through these links. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific attack pattern beyond link distribution.

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://bwmontagen.com/uploads/1/3/0/4/130488700/130488700.html#covet+island+of+desire+youtube
    • http://eshibofengyunzuqiu.br3h.com/uploads/1/3/0/4/130435590/xileviremizumilof.pdf
    • http://apapparellondonltd.net/uploads/1/3/0/6/130620512/karepobunomeje.pdf
    • http://mywoodshop.co/uploads/1/3/0/6/130622038/bobemenotixapo.pdf
    • http://gettsphotos.com/uploads/1/3/0/4/130492038/fefufezok-vufunu.pdf
    • http://michiganautoinjurylaw.com/uploads/1/3/0/5/130538918/zisota.pdf
    • http://zombiecloths.com/uploads/1/3/0/4/130435661/vepunusafab-zumexiwa.pdf
    • http://msplantdiv4.com/uploads/1/3/0/6/130639803/1c04ce9e2a4ecb.pdf
    • http://repoqueen.com/uploads/1/3/0/2/130289653/9121254.pdf
    • http://worldpoetryopenmic.org/uploads/1/3/1/1/131163949/4630688.pdf
    • http://bldent.ca/uploads/1/3/1/4/131453753/605dc2.pdf
    • http://hallenbeckpublishing.com/uploads/1/3/1/3/131384015/ravodomi.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009500.bin
08a5200c724824171a1ca6c072aa5ff2681cf26af651cf1e3b97d8563209df2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 6836 bytes
font_01_sfnt_off0000a5f9.bin
0226d8426882131f56e08cb7caa15895bbfaf028d05297654d3a123643014549		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F9 9884 bytes
font_02_sfnt_off0000c6d0.bin
a2b0b1c59f485623720205ca4009a9f5c10b3ef8fb149c49eb1b7423487ab673		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D0 59628 bytes
font_03_sfnt_off00017ac2.bin
8b49b898eeeb55350302230a0aef0e3fe581ebebceebb0d2663ff9d210fc83c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17AC2 2600 bytes
font_04_sfnt_off000183db.bin
8abc22e382cc99de06dea775234d46411e910da02098beadc76128f40057151a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x183DB 21660 bytes

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