Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ada353951b686b8…

MALICIOUS

PDF

46.9 KB Created: 2020-04-13 04:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 873d55eadc962c822335ca2f9d1b6d4d SHA-1: 76b36d5c76929acfcb04f3e5a9cb18070827c424 SHA-256: 7ada353951b686b86327fcd11bd2ae36a8504e3cfa497b5e4a4dd468a0509a64
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to other PDF files hosted on various domains. This pattern is indicative of a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, suggesting the document's primary purpose is to drive traffic to these external resources. No scripts were extracted, and the document body is largely unreadable, making it difficult to determine the ultimate payload.

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://palmpairup.com/uploads/1/3/0/4/130478295/130478295.html#movimiento+armonico+simple+resorte+ecuaciones
    • http://voiceoverzicht.com/uploads/1/3/0/7/130739525/4d806192f4.pdf
    • http://aniascards.com/uploads/1/3/0/6/130620594/rodolaliwog.pdf
    • http://fullycoveredagent.com/uploads/1/3/0/7/130775649/xobexidi.pdf
    • http://nyims.org/uploads/1/3/1/1/131163747/tadepusoz.pdf
    • http://vironos.com/uploads/1/3/0/9/130969663/sakeb.pdf
    • http://rinereyecare.net/uploads/1/3/0/2/130288317/jovagomono_lapujerasejavo.pdf
    • http://jouettlaw.com/uploads/1/3/1/4/131407370/e5a10fbea9d9.pdf
    • http://taxsavvywealth.net/uploads/1/3/0/3/130313249/7f2c523419.pdf
    • http://courtipie.com/uploads/1/3/0/3/130379561/29b54499ff23946.pdf
    • http://blueravensetter.com/uploads/1/3/0/2/130288830/kukebu.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_off00005f12.bin
6c45e69961fbaf15b3ed72bca97568286f114e1d5bcd29ee32bb3d432c37a696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F12 6296 bytes
font_01_sfnt_off00006e2c.bin
2c794d340b4a8783d37d5528c7d26a0cbd10014b20d97d030539efc26a735eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2C 7624 bytes
font_02_sfnt_off00008ab1.bin
c112901d0ee7789aa6675745ffa717256dd4c4fa7608cb4e8035a13c1773f7fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB1 3680 bytes
font_03_sfnt_off00009772.bin
932856ce853e0f4747a33e9fe4a8b37038dc42e306a0eb82a00681b0a17bba49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9772 16100 bytes

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