Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f38dcfa9e51aec9…

MALICIOUS

PDF

59.8 KB Created: 2020-04-01 14:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5a9b40dec0b33ca23dfbe404922a4539 SHA-1: 5f19c74272d024646f2f651e55d34b1faf835e7a SHA-256: 3f38dcfa9e51aec968ccec9708a0901f5a1687abc53581842bff35c92b3624ae
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This suggests a link farm or SEO spam campaign designed to drive traffic to potentially malicious sites. The document body, though heavily obfuscated, contains a URL that matches one of the extracted external links, reinforcing the lure. 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://segurohogardental.es/uploads/1/3/0/6/130604379/130604379.html#ap+lang+midterm+study+guide
    • http://showcasingfaith.com/uploads/1/3/0/7/130775554/fimimelutemaf-vajaxibaxemebo-pakil-zemele.pdf
    • http://limanwai.com/uploads/1/3/0/4/130488121/zeguvuvimexapopoje.pdf
    • http://red16.net/uploads/1/3/1/0/131070567/3495520.pdf
    • http://calebwilkins10.com/uploads/1/3/1/3/131379833/lifogutegujero.pdf
    • http://myfiestaofeight.com/uploads/1/3/0/9/130969750/2296847.pdf
    • http://entrepreneur-mentor.com/uploads/1/3/0/4/130478106/kilitisavipesexigigu.pdf
    • http://nrgcleaning.com/uploads/1/3/0/6/130621845/443133.pdf
    • http://mywillcafe.com/uploads/1/3/1/3/131380466/744e91531b9.pdf
    • http://scfodyb.com/uploads/1/3/0/6/130621701/xegeturuzerisuveroje.pdf
    • http://presidentsofantarctica.com/uploads/1/3/0/6/130605212/36a87dc0397b10c.pdf
    • http://brunserin.com/uploads/1/3/0/4/130476722/lobubo.pdf
    • http://qjohnsontechnologies.com/uploads/1/3/1/0/131070289/pesinotedabawevago.pdf
    • http://lakeareaxtreme.com/uploads/1/3/0/6/130620508/totufi.pdf
    • http://hitthegasllc.com/uploads/1/3/0/9/130969896/5821477.pdf
    • http://wannabemoke.com/uploads/1/3/0/8/130813546/zujuguvoz-noxarixuwoxaba.pdf
    • http://bigeaglelodge.com/uploads/1/3/0/9/130969116/c3cd67c543e5279.pdf
    • http://tyarihaircollections.com/uploads/1/3/1/3/131378913/5630195.pdf
    • http://animals-pro.com/uploads/1/3/0/3/130323836/fezutino.pdf
    • http://yokpoupe.com/uploads/1/3/0/5/130543346/3346215.pdf
    • http://msalyssasclass.com/uploads/1/3/0/8/130814921/39385.pdf
    • http://mbtruckinginc.net/uploads/1/3/1/4/131437074/7713776.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c240.bin
95b4ce71b823b66abe871bf560dd5dfa81b608d77013b9f809c16b05cfeef36d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC240 8128 bytes

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