Malicious PDF — malware analysis report

Static analysis result for SHA-256 e99d16e9c4779162…

MALICIOUS

PDF

47.8 KB Created: 2020-04-01 17:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bcabef059354663e78da0f012056247e SHA-1: 09c9314dd226a9b342ffdd88c55831e3e24d0545 SHA-256: e99d16e9c47791620f3f0eea3d0a1e40c5f032027f0b6ad635ee1db8fd35ff1f
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The document body text is largely unreadable, but the presence of numerous external links suggests a redirection or content-distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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://getcherry.app/uploads/1/3/0/5/130543261/130543261.html#helplessly+hoping+sheet+music+free
    • http://2-little-tigers.com/uploads/1/3/0/6/130604413/7346441.pdf
    • http://derig.host/uploads/1/3/1/3/131381533/e661aef23fa21.pdf
    • http://clintbeilke.com/uploads/1/3/0/6/130639468/sebagajamisipopimojo.pdf
    • http://gpigeneticperformanceinc.com/uploads/1/3/1/3/131381332/9510267.pdf
    • http://pridetoprisonbook.com/uploads/1/3/0/7/130775845/libelefuru.pdf
    • http://palmettohouseworx.com/uploads/1/3/1/3/131379410/8703602.pdf
    • http://heatherborowski.com/uploads/1/3/0/6/130605069/7536704.pdf
    • http://rprofessional.net/uploads/1/3/0/7/130776886/6419325.pdf
    • http://atlantic-accelerator.com/uploads/1/3/0/6/130603803/woxixekadiwasukemuz.pdf
    • http://lofofoods.com/uploads/1/3/0/6/130604724/4960392.pdf
    • http://internationallawyermoves.com/uploads/1/3/0/9/130969722/wenavi.pdf
    • http://111-ed.com/uploads/1/3/0/3/130313378/virosolubobexat-gegofulejin-woxexasem-vusovajow.pdf
    • http://globalgirleats.com/uploads/1/3/0/6/130621531/momabata_bedosewum_fudabagu_gigugiz.pdf
    • http://vansrv7.com/uploads/1/3/0/3/130312929/8664435.pdf
    • http://anamorphicsportal.com/uploads/1/3/0/2/130288394/bc4ecb495a.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008150.bin
9bbaee577a4559d410f286d9048012d5101cb53428fa1cb846cc88171c4c01ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8150 10480 bytes
font_01_sfnt_off0000a6e6.bin
264da58494b94e4704bc59a91ed7188a2e0b9fc1fa50d69edef70f2621d1673f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E6 16080 bytes

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