Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d446668a251061e…

MALICIOUS

PDF

37.0 KB Authoring application: Soda PDF
MD5: edfaee6ca1eb538f692bb2f66f08943b SHA-1: 4584207c0fb490dfbddbf5bd2bc16a624ec9d0b1 SHA-256: 1d446668a251061e29110403ea62308465d8ef5ea4480da5174b96defba76802
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and a machine learning classifier, indicating malicious intent. The critical PDF_SEO_LINK_FARM heuristic identified a mass of external PDF links, with the first being http://quick.beer/uploads/1/3/0/3/130313289/zojap-wunesar.pdf. This suggests the document is designed to act as a lure, redirecting users to a network of potentially malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://quick.beer/uploads/1/3/0/3/130313289/zojap-wunesar.pdf
    • http://www.wellingtongrillcolorado.com/uploads/1/3/0/8/130874021/xobojunetulujuvux.pdf
    • http://rickydemedeiros.com/uploads/1/3/0/5/130540172/3980800.pdf
    • http://vacavilleselfstorage.org/uploads/1/3/0/2/130270899/bidejifipef.pdf
    • http://thebibleistheanswer.org/uploads/1/3/0/4/130475982/pilinulit.pdf
    • http://myfiestaofeight.com/uploads/1/3/0/5/130588702/5526064.pdf
    • http://powysdyslexiasupport.co.uk/uploads/1/3/0/6/130604521/lelugeg-zuxam-mixivinajojimi-murifijitor.pdf
    • http://springplantsohio.com/uploads/1/3/0/2/130289345/delamojifoz-fokitejemenemo-zukijuvawefunuv.pdf
    • http://ketobakinggoddess.com/uploads/1/3/0/5/130588452/vawogaxovofuko_finusa.pdf
    • http://fitwellpro.com/uploads/1/3/0/2/130270790/360e809.pdf
    • http://www.apolloaperture.com/uploads/1/3/0/2/130289315/3231161.pdf
    • http://lastwordsspoken.com/uploads/1/3/0/7/130738566/cb1010da7809462.pdf
    • http://suppliesondemandllc.com/uploads/1/3/0/8/130874416/womowaxuz_wulekudetiwuto_mapusijufako_biriwazuxe.pdf
    • http://hostmaster.profitbouw.nl/uploads/1/3/0/6/130621277/f7e2c04ed606.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/6/130639406/130639406.html#acetic+acid+sodium+acetate+net+ionic+equation

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bf1.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF1 2652 bytes
font_01_sfnt_off0000379f.bin
b2931933f2d7e6a9489be64642b8057e0357a702f176feda5805c75490284fe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x379F 7464 bytes

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