Malicious PDF — malware analysis report

Static analysis result for SHA-256 144710d657952671…

MALICIOUS

PDF

48.4 KB Authoring application: PDF Studio
MD5: 5b89c22262b87e12c2ab0e2929534329 SHA-1: ec832c25628e93382c63775e9b32c11d685eec5d SHA-256: 144710d657952671c7c9ae42fbff3e95ebc4b9bf0ecdb6bdc78c150a0f7c56e8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or content distribution vector, aligning with T1566.001 (Spearphishing Attachment).

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://teamworkprofiles.com/uploads/1/3/0/2/130274301/7264188.pdf
    • http://nsanegriplegendcarscom.com/uploads/1/3/0/7/130776046/zawanadadiv-vilupar-xifer.pdf
    • http://itsmrjack.com/uploads/1/3/0/5/130550944/mijodavisamu.pdf
    • http://missionarytest.com/uploads/1/3/0/4/130436154/xadoronezebi.pdf
    • http://nu9empire.com/uploads/1/3/0/5/130546118/30df49.pdf
    • http://www.bradpulcini.com/uploads/1/3/0/6/130603852/9318755.pdf
    • http://beachypress.com/uploads/1/3/0/4/130435734/e1b4c01be425ddd.pdf
    • http://morgansparkson.com/uploads/1/3/0/2/130287506/2976237.pdf
    • http://abra-maquillos.com/uploads/1/3/0/8/130873736/sutamazosijov.pdf
    • http://undiscoveredactress.com/uploads/1/3/0/5/130588865/xuninunik_wuwure_seviviwu_xebid.pdf
    • http://myrobynscreations.com/uploads/1/3/0/4/130489437/4279508.pdf
    • http://sharonostrov.com/uploads/1/3/0/3/130379178/regapafiwubizoj_zesaveme_sogugek_waxeko.pdf
    • http://74-123-72-191.mgwnet.com/uploads/1/3/0/6/130639776/130639776.html#pernicious+anemia+symptoms+in+hindi
    • http://fedorahosted.org/lohit
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003440.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3440 1388 bytes
font_01_sfnt_off00003de4.bin
76a884bb669068cc1d6e6dcd3ff9698cab1d579883e8af8bc5f86e32da60d83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DE4 15348 bytes
font_02_sfnt_off0000680a.bin
af3764eda0e94193e4b846eec303a015826aaed7ef206de86669457a0b576657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680A 7128 bytes

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