Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac76aa867caf634a…

MALICIOUS

PDF

39.4 KB Created: 2020-04-13 13:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 85f54b6a26c2f518c42768951ffb8671 SHA-1: 47bca7ad5784d07256e4571b372cd4569ffa8336 SHA-256: ac76aa867caf634aa3e17948de467dc9c3fb4231f9a50be064e3d06b62ce3aa5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.001 PowerShell

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to medical terms, suggesting a lure to attract clicks. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'euphoria-7.com' being a dominant host. The presence of embedded URLs further supports the malicious intent of redirecting users to potentially harmful content.

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://nettoyageaspirepro.com/uploads/1/3/0/7/130739631/130739631.html#secondary+thrombocytosis+icd+10+code
    • http://euphoria-7.com/uploads/1/3/0/2/130292014/sakojoxuvasu.pdf
    • http://sunriseshoresbeachresort.com/uploads/1/3/0/5/130539419/a52b490f679a9.pdf
    • http://leiashouse.org/uploads/1/3/0/6/130620430/3151863.pdf
    • http://canna-biz.cz/uploads/1/3/1/4/131437331/pilubelesixuwor.pdf
    • http://thehridoyebangladesh.com/uploads/1/3/0/9/130968981/fikexulajaga.pdf
    • http://sanderswoods.com/uploads/1/3/0/6/130621163/zufoferutusufamitup.pdf
    • http://cebport.org/uploads/1/3/1/4/131437061/ribojapipakigov.pdf
    • http://igi-fitness.com/uploads/1/3/0/6/130620694/2279798.pdf
    • http://beamonstaxidermy.com/uploads/1/3/0/6/130605259/2358428.pdf
    • http://nurseinnovation.solutions/uploads/1/3/1/4/131454158/lovujexaxu_meliraki_mipidudafu_wujigekav.pdf
    • http://perthfloors.com/uploads/1/3/1/0/131070920/154e22db8988.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_off00007452.bin
d7800e6e279ed3dd5020ab58a58b7bc78c4c663b1dcebee721b430e22d89ef74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7452 7528 bytes

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